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two families
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  两科
     The correct identification rate was 99.62% with the SWF-A system in 1,054 strains including two families and one genus studied.
     以1054株(两科一属50个分类单位)作SWF-A板,其正确鉴定率达99.62%。
短句来源
     The classification and district of turbellarians in freshwater in Taibai National Forest Park was preliminary investigated from June 11 to June 26,1995.It was concluded that there is an amount of this sppcies of animal resource distributing over Taibai in Moutain Two genera in two families were founded.
     1995年6月11—26日,作者通过对太白山国家森林公园淡水涡虫的初步调查,认为这种动物资源在太白山有一定数量的分布,现已发现两科两属。
短句来源
     The allele frequency of four allozyme loci in four grasshopper species from two families of Catantopidae and Oedipodidae was examined using horizontal starch gel electrophoresis.
     用水平淀粉凝胶电泳技术对采自山西太原黄陵、山西临猗伍姓湖及山西雁门关两科 4种蝗虫的 4个等位基因酶位点的基因频率进行了比较研究 ,并用BIOSYS -Ⅱ软件进行结果分析。
短句来源
     In the former two families, the S loci have been shown to be located near centromere. However, the chromosomal location of the S locus in Antirrhinum, a species of the Scrophulariaceae, is not known.
     在前两科植物中,自交不亲和(S)位点定位于着丝粒的附近,但在玄参科植物金鱼草(Antirrhinum)中自交不亲和位点至今未知。
短句来源
     Genetic distances among subfamilies (0.168-0.242) are bigger than distances between genera or species of the same subfamily. The distance between Pentatomidae and 2 outgroups of Scutelleridae are the biggest, which reveal a distinct gap between this two families.
     亚科间的遗传距离介于0·168~0·242之间,大于亚科内属种间的遗传距离,蝽科与盾蝽科2外群之间遗传距离最大,两科之间存在明显的间断。
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  “two families”译为未确定词的双语例句
     Study in Two Families of β-Thalassemia Mutations of IVS-654(C → T) and CD41-42 (-TTCT) in Tujai Mationlity in Hubei Province
     湖北省土家族β地中海贫血ⅣS-Ⅱ-654(C→T)和CD41-42(-TTCT)两个家系
短句来源
     Coloring of two families of G_t~s(a,b;c,d) graphs
     两类G_t~s(a,b;c,d)图的着色
短句来源
     The first two families are derived from a 3-or 5-wheel by subdivisions, their star chromatic numbers being 2 + 2/(2n + 1), 2 + 3/(3n + 1) and 2 + 3/(3n - 1) separately.
     前两类是由3-或5-轮图经细分等构造出的,其星色数分别为2+2/(2n+1),2+3/(3n+1)和2+3/(3n-1).
短句来源
     SPINK5 Genion Mutation and Its Products Activity in Two Families with Netherton Syndrome
     两个Netherton综合征家系SPINK5基因突变及产物活性的检测
短句来源
     F  C activity in heterozygotes from the two families corresponded to 29.60%-104.86% of normal plasma and the average value of F  activity in normal plasma was 86.34%±17.98%,fluctuated between 56.5%±165.17%.
     4 6例正常人血浆F活性F∶C平均值为 86 .34%± 17.98% ,范围在5 6 .5 %~ 16 5 .17%之间 ,3例患者为 0 % ,家系中杂合子范围为 2 9.6 0 %~ 10 4 .86 %。
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  相似匹配句对
     Investigation of two families with hemangioblastoma
     两个家系血管母细胞瘤病调查报告
短句来源
     Two.
     二.
短句来源
     Two.
     二、末日意识
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     Two Particular Families of Copulas
     两类特殊的联系函数(Copula)
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  two families
They included two families of Lamellibranchia (7.7% of the total taxa number), two families of Oligochaeta (50%), Chironomidae (38.5%), and one other animal (3.8%).
      
The stability zones are determined for two families.
      
Almost all snoRNAs fall into two families, C/D and H/ACA, distinguished by conserved sequence boxes.
      
Two families are investigated: homogeneous LDC codes and a convolutional code version of turbo-codes.
      
In this paper we introduce a new concept of modified Butson-Hadamard matrices and construct two families of quaternary codes derived from the corresponding families of modified complex matrices with entries from a finite cyclic group of order 4.
      
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Twenty five samples of Amaryllidaceous and Liliaceous bulbs commercially bearing the common name "Shui-Hsien" were collected from several places in China. Taxonomic identification of plants grown from these bulbs proves that they are derived from twelve species of plants, belonging to four genera and two families (Amaryllidaceae and Liliaceae), namely: Narcissus tazetta L. var. chinensis Roem., N. polyanthos Lois., N. aureus Lois., N. pseudo-narcissus L., N. incomparabilis Mill., N. biflorus Curt., N....

Twenty five samples of Amaryllidaceous and Liliaceous bulbs commercially bearing the common name "Shui-Hsien" were collected from several places in China. Taxonomic identification of plants grown from these bulbs proves that they are derived from twelve species of plants, belonging to four genera and two families (Amaryllidaceae and Liliaceae), namely: Narcissus tazetta L. var. chinensis Roem., N. polyanthos Lois., N. aureus Lois., N. pseudo-narcissus L., N. incomparabilis Mill., N. biflorus Curt., N. poeticus L., N. papyraceus Ker-Gawl., N. jonquilla L., Leucojum aestivum L., Muscari botryoides Mill. and Hyacinthus orientalis L. Botanical descriptions of the plants, an analytical key, and twelve illustrations are given.

作者将采自上海、崇明、杭州及漳州等地的各种俗称水仙花的鳞茎引种栽培后,进行了原植物的学名鉴定,描述了它们的植物形态。文中附有种检索表及照片。

There are six sections incorporated in this paper. In the first section a brief sketch concerning the development of a phylogenetic contour of the plant kingdom, especially the part of Spermatophytes, is given. The contour here means only the classification of Spermatophytes inio Gymnospermae and Angiospermae, the latter into Dicotyledoneae and Monocotyledoneae, and the Dicotyledoneae into Archichlamydeae and Metacchlamydeae; but the accomplishment of it was achieved by the continuous efforts of various bo-...

There are six sections incorporated in this paper. In the first section a brief sketch concerning the development of a phylogenetic contour of the plant kingdom, especially the part of Spermatophytes, is given. The contour here means only the classification of Spermatophytes inio Gymnospermae and Angiospermae, the latter into Dicotyledoneae and Monocotyledoneae, and the Dicotyledoneae into Archichlamydeae and Metacchlamydeae; but the accomplishment of it was achieved by the continuous efforts of various bo- tanists and through a long period of more than bicentenial time. Hence the above mentioned contour is here regarded as an invaluable compendium in the classification of Spermatophytes. The second section deals with the leading subjects of Dicotyledoneae of the contour. Because of some taxono- mists, as Hans Hallier (1912), Alfred Gunderson (1950), and Lyman Benson (1957), who have proposed respectively four, ten, and five superorders under the class Dicotyledoneae, the two subclasses Archichlamydeae and Meta- chlamydeae have been thus abandoned in their books. These superorders appear to be somewhere more natural in the arrangement of related families in certain orders than the two subclasses, but they are certainly less ten- able in practice. Besides 15 family-groups, Dr. John Hutchinson (1959) has revived the two groups Lignosae and Herbaceae instead of the two subclass- es for the classification of his Dicotyledons. This kind of Hutchinson's system seems to be quite inadequate and readily misleading to an error of phylogeny. Furthermore, in this section is also mentioned the system of Dr. A. A. Grossgeim (1945), in which the two classes Dicotyledoneae and Mo- nocotyledoneae are even abolished, but 11 groups (stocks) and 23 superorders have been used instead. Perhaps this system is the most complicated one in the modern classification of Angiosperms and hardly acceptable for practical uses. In the third section the principles for settling the systematic positions of some orders and families are suggested. There are three items given in it. The first item emphasizes that a set of reproductive and vegetative charac- ters must be taken into consideration and comparison before a certain family is settled in a certain order; the second states that the formal similarities in some characters must be distinguished from the phylogenetic relationships; and the third mentions that the sequences of families in a certain order ought to be in accordance with the evolutionary tendencies of their flowers and the developmental directions of their habits and geographical distribu- tions. Finally in this section it suggests that the data from other related sciences, such as Anatomy, Embryology, Palynology, etc. should be used for references, when certain families are encountered morphologically indeterm- inable for their systematic positions. The fourth section reveals the fact that some closely related families, such as Capparidaceae and Cruciferae, Araliaceae and Umbelliferae, Big- noniaceae and Scrophulariaceae, Verbenaceae and Labiatae, etc. have been divided by Hutchinson's system (1959) into far remote orders, for one of them is fundamentally woody and the other herbaceous in habit. In order to show that these every two families in a couple are inseparable from each other and that the segregation of them into different orders could not be acceptable in phylogeny, one or more genera intermediate between them are evidenced and explained. On the other hand, some quite unrelated families, such as Calycanthaceae and Rosaceae, Nyctaginaceae and Thymelaeaceae, Elaeagnaceae and Rhamnaceae, Araliaceae and Caprifoliaceae, etc. are dis- cussed in the fifth section. They have been united by Hutchinson into Ros- ales, Thymelaeales, Rhammales, and Araliales respectively. But the group- ing of these every two families into a single order is probably based upon their formal similarities in some characters arisen from parallel developments. According to their evolutionary scales, they would be naturally fallen into different orders. Regarding the systematic position of the family Calycanth- aceae, a new suborder Monimiineae of the order Magnoliales is published here with Latin diagnosis. It is known hitherto that the three families, Mo- nimiaceae, Amborellaceae, and Calycanthaceae belong to this suborder, the first one being chosen as its type. Finally in the sixth section, it deals with the contributions of some other related sciences to the modern Taxonomy. Amongst them the three sciences, Wood Anatomy, Plant Embryology, and Palynology are given as examples. Several families, such as Eucommiaceae, Bretschneideraceae, Rhoi- pteleaceae, Cactaceae, Callitrichaceae, etc. have been regarded as doubtful or isolated ones for their phylogenetic positions. By means of the data from these sciences, they are, however, now each attributed to their proper ord- ers with certainty. Economically the most important family Gramineae is generally included with Cyperaceae in the order Glumiflorae, but recently the contributions of both Palynology (Erdtmann, 1952) and Anatomy (Sm- ithson, 1957) confirm that Grarnineae have affinities with Flagellariaceae, a member of Enantioblastae (Hallier, 1912). Although the contributions of these sciences frequently assist taxonomists in adjusting the systematic positions of some families sedis iucertae, the classification of Spermatophy- tes still in most cases depends upon the knowledge of Plant Morphology, especially of the Comparative Morphology of flowers, for the study of their phylogeny.

植物分类学的任务不仅是对于植物界的种类进行鉴定和命名,而其最终目标是在于探讨所有植物间的相互关系,进而确定一理想的符合于种系发生的分类系统。本文分为六节。首先介绍在植物分类学发展过程中,经过了长期摸索,才将纷繁的植物界尤其是种子植物门,奠定简明的系统输廓。在这一轮廓的基础上进行目科系统的探讨,这是既有继承又有发展的。其次,评论某些学者将双子叶纲下的原始花被和后生花被二亚纲废弃不用,而代之以若干目群或木本与草本二大支;尤其强调了被子植物的双子叶纲和单子叶纲的亟应保留,不能代之以若干斡支。第三节指出确定目科系统位置的原则,不能以形象上的接近来替代系统上的亲缘。继而在第四和第五节内分别列举说明某些在系统上不容分割的各科和某些在演化上为平行发育的各科,对赫经生的《有花植物科志》一书进行了批判。在第五节内,以拉丁摘要发表了木兰目中之一新亚目:檬尾梅亚目(Monimiineae),内含有其代表科檬尼梅科、互叶梅科、和蜡梅科,而后一科即被赫氏误列于蔷薇目中者。最后第六节援引了解剖学、胚胎学与孢粉学为例,阐明这些有关学科的成就对于植物分类学的贡献,使某些难以安排的目科亦因之而肯定了它们的系统位置。同时也说明了分类学科不仅在以...

植物分类学的任务不仅是对于植物界的种类进行鉴定和命名,而其最终目标是在于探讨所有植物间的相互关系,进而确定一理想的符合于种系发生的分类系统。本文分为六节。首先介绍在植物分类学发展过程中,经过了长期摸索,才将纷繁的植物界尤其是种子植物门,奠定简明的系统输廓。在这一轮廓的基础上进行目科系统的探讨,这是既有继承又有发展的。其次,评论某些学者将双子叶纲下的原始花被和后生花被二亚纲废弃不用,而代之以若干目群或木本与草本二大支;尤其强调了被子植物的双子叶纲和单子叶纲的亟应保留,不能代之以若干斡支。第三节指出确定目科系统位置的原则,不能以形象上的接近来替代系统上的亲缘。继而在第四和第五节内分别列举说明某些在系统上不容分割的各科和某些在演化上为平行发育的各科,对赫经生的《有花植物科志》一书进行了批判。在第五节内,以拉丁摘要发表了木兰目中之一新亚目:檬尾梅亚目(Monimiineae),内含有其代表科檬尼梅科、互叶梅科、和蜡梅科,而后一科即被赫氏误列于蔷薇目中者。最后第六节援引了解剖学、胚胎学与孢粉学为例,阐明这些有关学科的成就对于植物分类学的贡献,使某些难以安排的目科亦因之而肯定了它们的系统位置。同时也说明了分类学科不仅在以形态为卞的鉴定命名部分上为一基础科学,而且在与这些有关学科结合为一体的系统理论部分,成为生物学部门中的先进科学。

During a survey of helminth parasites of freshwater fishes, from the Min River in Fooehow, a number of specimens of trematodes belonging to the genus Eumasenia Sri-vastava, 1951 were secured from the stomach and intestine of Clarias fuscus (Lace-pede). They belong to a species new to science and the diagnosis is briefly given as follows:Maseniidae; Body small, 1.04-1.68 mm. long by 0.32-0.63 mm. in maximum diameter, at the level of testes. Cuticle armed with spines more prominent anteriorly and absent in posterior...

During a survey of helminth parasites of freshwater fishes, from the Min River in Fooehow, a number of specimens of trematodes belonging to the genus Eumasenia Sri-vastava, 1951 were secured from the stomach and intestine of Clarias fuscus (Lace-pede). They belong to a species new to science and the diagnosis is briefly given as follows:Maseniidae; Body small, 1.04-1.68 mm. long by 0.32-0.63 mm. in maximum diameter, at the level of testes. Cuticle armed with spines more prominent anteriorly and absent in posterior third of tody. Oral sucker funnel-shaped, 0.141-0.173 × 0.135-0.189 mm., with two, middorsally interrupted, alternating crowns of spines. 25-32 circumoral spines in each row. Circumoral spines of the first row, measuring 0.017-0,025 mm. long by 0.004-0.008 mm. wide; those of the second row, measuring 0.017-0.025 mm. long by 0.003-0.008 mm. wide. Ventral sucker, 0.141-0.169 × 0.137-0,176 mm., situated middle third of body. Prepharynx, 0.022-0.064 mm. long; pharynx 0.034-0.064 × 0.043-0.073 mm.; oesophagus, 0.086-0.111 mm. long. Intestinal caeca short, extending to level of the middle region of anterior testis. Testes oval, one obliquely behind the other, intercecal, in the third quarter of body. Anterior testis measures 0.078-0.134 mm. long by 0.124-0.129 mm. wide; posterior testis 0.060-0.141 mm. by 0.120-0.236 mm. Cirrus pouch very long measuring 0.677-0.96 mm. long by 0.071-0.099 mm. in basal diameter, enclosing bipartite seminal vesicle, prostate complex and ejaculatory-duct. Pars prostatica without the lateral diverticulum.Common genital pore dorsal to oral sucker just at the dorsal gap in crown of circumoral spines. Ovary 0.076-0.179 × 0.083-0.150 mm., lies slightly submedian, obliqualy to right, between acetabulum and anterior testis. Receptaculum seminis large, 0.064-0.159 × 0.042-0.107 mm., between testes and ovary. Laurer's canal present, Vitellaria follicular, extending in lateral fields from acetabular level to an- terior testicular zone. Uterus with descending and ascending limbs almost occupying whole posttesticular area. Excretory vesicle saccular reaching to posterior margin of posterior testis. Eggs numerous, operculate, 0.022-0.031* 0.015-0.019 mm.Eumasenis fukienensis is separated from its closely related species E. moraddba-densis Srivastava, 1951 and E. bangweulensis Beverly-Burton, 1962 by the size of body, size and number of circumoral spines, the length of prepharynx and oesophagus, and by the absence of a kteral prostatic diverticulum and in having a sac-shaped excretory vesicle.The life cycle of Eumasenia fukienensis was established experimentally in the laboratory and all stages described. Eggs are fully embryonated when laid, swallowed by the molluscan hosts, Hippeutis canton Benson, Gyraulus convexiusculus Hutton, or Segmentina hemisphaerula (Benson). The miracidia penetrate into intestinal wall and transform into small embryos with germinal cells. Mother and daughter sporocysts developed outside the intestine and in the digestive gland of the snails. The latter gives rise to cercariae which emerged from snails 24 days after the eggs had been eaten. Cercariae encysted in the mature daughter sporocysts or penetrated and encysted in the tissue of the same intermediate host or other snails such as Sphaerium lacustre (Muller), which live together with Hippeutis cantori Benson. Me-tacercariae when fed to Clarias fuscus (Lacepede), developed into premature adult in the small intestine in 10 days.Based on the studies of the life cycle of E. fuUenensis, it is demonstrated that Family Maseniidae Yamaguti, 1954 is closely related to Family Plagiorchiidae Luhe, 1091. The phylogenetic relationship of the two families is discussed.

1.本文详细描述了福州地区胡子鲶肠管中极常见的一种真马生尼亚吸虫的形态构造,由于福建标本在虫体的大小,围口棘圈中棘的数目、大小,腹吸盘位置,前咽及食道的长度,肠管盲端到达的位置,卵巢、睾丸所在的位置,以及其相关的大小,前列腺管基部的构造,以及排泄囊的形状等,和文献上已记述的虫种差别很大。因此我们为其定名为福建真马生尼亚吸虫Eumasenia fukienensis sp.nov.。 2.本文详细描述了本种吸虫虫卵、毛蚴以及在三种扁螺类:凸旋螺Gyraulus conve-xiusculus Hutton;肯氏圆扁螺Hippeutis cantori Benson和半球隔扁螺Segmentina hemis-phaerula (Benson)体内发育的二代胞蚴、尾蚴以及囊蚴等各幼虫期的形态。 3.本文对本种吸虫在系统发生上和斜睾科吸虫的亲缘关系进行讨论。

 
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