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幼体     
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  larvae
     The toxicity of Cu~(2+), Zn~(2+), Cd~(2+), and Pb~(2+) to embryos and veliger larvae of Babylonia formosae habei and the detoxification of EDTA to veliger larvae poisoned by Cu~(2+ )and Zn~(2+) were studied.
     研究了重金属Cu2+、Zn2+、Cd2+、Pb2+对波部东风螺(Babyloniaformosaehabei)胚胎和面盘幼体的毒性效应及EDTA对幼体Cu2+、Zn2+中毒的解毒效果。
短句来源
     /cm2. In the ~pond 12-10, the density of abalone larvae is 0.010.17 inds.
     号池鲍鱼幼体密度为~个12-10 0.010.17 /cm2平均密度为个, 0.06 /cm2。
短句来源
     The 48-hour LC_(50) values of the four ions to the veliger larvae were 33.251, 86.352, 1 524.191, 4 751.042μg·L~( 1) respectively, and the 96-hour ones 2.177, 5.942, 107.218, 303.102μg·L ~(-1 )respectively.
     对幼体的48hLC50值分别为33.251、86.352、1524.191、4751.042μg·L-1,96hLC50值分别为21.772、59.418、1072.182、3031.019μg·L-1; 安全浓度分别为2.177、5.942、107.218、303.102μg·L-1;
短句来源
     the Cs of NO - 2 N for Z,M,and P of the two kinds larvae were 0.56 and 1.08,0.77 and 0.45,2.57 and 2.06 mg/L respectively.
     NO-2 N对两种虾幼体的Cs分别为Z :0 .5 6和 1.0 8,M∶0 .77和 0 .4 5 ,P∶2 .5 7和 2 .0 6mg/L。
短句来源
     In the pond 12-2, the ~density of abalone larvae is 0.010.45 inds. /cm2and the average density is 0.15 inds.
     号12-2 池鲍鱼幼体密度为~个 0.010.45 /cm2平均密度为个, 0.15 /cm2;
短句来源
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  larva
     13.16 kg larva of Perinereis aibuhitensis Grube which average length was 2.34 cm had been bred in 80 m~2 concrete pool Orient Halobios Corporation in Yuhuan country from May 1st to June 25th in 2003.Different conditions of zoology odd-gene test were carried out on larva.
     报道了2003年5月1日~6月25日在玉环县东方海洋生物有限公司育苗厂80 m2的水泥池中育出平均体长2.34 cm的双齿围沙蚕(Perinereis aibuhitensisGrube)幼体13.16kg,并对双齿围沙蚕疣足幼虫进行了不同生态条件的单因子试验。
短句来源
     (3) It was estimated that LD50/4 days was 10,000 r for early nauplius larvae, LD50/5days 60,000 r for later nauplius larva, and LD50/7days 60,000 r for young adults .
     (4)盐水丰年虫前期无节幼体LD_(504)天约等于10,000伦,后期无节幼体LD_(50/5)天约等于60,000伦,幼小成体LD_(50/7)天约大于60,000伦。 (5)盐水丰年虫幼体的三个不同发育阶段,对Co~(60)γ射线的敏感性是越年幼的幻体对射线越敏感。
短句来源
     Under 24.5-29℃,the larva developed into young Oratosquilla kempi after 27d(11 stages).
     在水温24.5-29℃时,幼体经过27d(11期)发育变为仔虾蛄。
     The optimist salinity for larval growth is 295,on which the growth rate is 16 μm and the survival rate is 90%The larva will become submerged larval in 8 days. 
     盐度29 5为幼体生长的最适盐度,8d可生长成下潜幼体,平均日生长16μm,成活率90%,盐度高于或低于29 5,其幼体的存活和生长都受到很大影响。
短句来源
     The accumulative temperatures for the embryo, zoea larva and megalopa larva development are 219.4℃, 226.35℃ and 49.3℃ respectively (12℃ is taken as biological zero degrees).
     胚胎、状幼体和大眼幼体的发育积温分别为219.4℃,226.35℃,49.3℃(以12℃为生物学零度)。
短句来源
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  hatchling
     Of all energy in the newly emerged hatchling, 71.8% was in the carcass, 19.4% in fat bodies and 8.8% in the residual yolk.
     初生幼体的能量组成为 :躯干占 71 8% ,脂肪体占 19 4% ,剩余卵黄占 8 8%。
短句来源
     Of all energy in the newly emerged hatchling, 95 2% was in the carcass, 2 4% in fat bodies and 2 4% in t he residual yolk.
     初生幼体的能量组分为 :躯干95 2 % ,脂肪 2 4% ,剩余卵黄 2 4%。
短句来源
     During incubation,approximately 81 4% dry material,70 0% lipids and 79 4% energy in egg contents of the freshly laid egg were transformed to the hatchling.
     新生卵内容物中81-4 % 的干物质、70-0% 的脂肪和79-4 % 的能量在孵化过程中被转移到幼体
短句来源
     30°C, temperature affected incubation length and most hatchling traits examined.
     30°C的温度范围内,温度影响孵化期和大多数幼体的形态特征。
短句来源
     Embryonic use of material and energy and hatchling traits in the lacertid lizard Eremias argus
     丽斑麻蜥胚胎物质和能量的利用及孵出幼体的特征
短句来源
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  zoea larva
     The positive rate of natural collect Brood crabs of H. penicillatus, eggs, zoea larva, megalopa larva and junior crab is 82.7%, 79.3%, 72%, 0 and 42.5% respectively.
     绒螯近方蟹亲蟹、卵、溞状幼体、大眼幼体和幼蟹的感染率分别为82.7%、79.3%、72%、0和42.5%。
短句来源
     The accumulative temperatures for the embryo, zoea larva and megalopa larva development are 219.4℃, 226.35℃ and 49.3℃ respectively (12℃ is taken as biological zero degrees).
     胚胎、状幼体和大眼幼体的发育积温分别为219.4℃,226.35℃,49.3℃(以12℃为生物学零度)。
短句来源
     The average fullness index of stomach is 75.70‰, and the weight percentage of various kinds of food is in order of copepoda>cleadocera>nauplius>zoea larva>rotifera>algae.
     3)幼鱼的平均饱满指数为75.70‰。 各类食物重量百分比的顺序为:桡足类>枝角类>无节幼体>虾类溞状幼体>轮虫>藻类。
短句来源

 

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      larvae
    anastomosis larvae, i.e., after feeding on the leaves treated with alkaloid, the larvae lost their weight, weight gain, and relative growth rate (RGR) significantly when compared with the controls.
          
    The results showed that, feeding on clone 7, the activity of esterase, carboxylesterase, and mixed-function oxidases in the midgut of the larvae was very much decreased.
          
    Feeding on clone 10, those results were less than those of clone 7 and there were few changes on the larvae, which fed on clone 26.
          
    The changes of the amylase in the midgut of larvae were the same as those described above.
          
    The same changes were taking place on the larvae feeding on clone 10.
          
    更多          
      larva
    A total of 75 species of zooplankton belonging to 56 genera and 17 groups of pelagic larva were identified in the Yueqing Bay.
          
    The First Finding of a Sea Spider (Pantopoda) Planktonic Larva
          
    Giant actinotroch, a larva of phoronida from the South China Sea: The giant larva phenomenon
          
    These animals are characterized by large lipid-rich eggs, highly modified embryogenesis, and the absence of a planktotrophic larva.
          
    A brief review dedicated to the relationship between the egg animal-vegetal axis and polarity of future larva in Cnidaria.
          
    更多          
      hatchling
    Behavioural responses by hatchling racers (Coluber constrictor) from two geographically distinct populations to chemical stimuli
          
    Thus, incubation of eggs in soil or sand at ambient temperature with a periodic exposure to high tolerable temperature provides an optimum balance between developmental rate, hatching success and hatchling quality in C.
          
    Influence of incubation conditions on hatching success, embryo development and hatchling phenotype of common chameleon (Chamaele
          
    Differences in hatchling phenotype were mostly explained by clutch identity, although it was also affected by incubation treatments, with bigger and heavier hatchlings in colder treatments.
          
    Incubation conditions did not affect hatchling growth nor survival rates, but survivors were differentiated by their higher increase in egg mass during incubation.
          
    更多          
      germling
    On Donor-Acceptor Relations and Growth Correlation in Shoot Development of the Pedunculate Oak Germling
          
    Most frequently the spore envelope remains intact and the germling which may or may not have divided emerges through a pore at one end of the envelope.
          
    Alpha-granules are numerous and cyanophycin is nearly absent in the germling.
          
    Compensatory nuclear migration into an anucleate cell was presumed during synchronous division of nuclear aggregates in the adjacent cell of an individual germling.
          
    However, the return route was not via the central pore of the septum but rather occurred at the juncture of the cross-wall with the germling-periphery.
          
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      其他


    1. All kinds of colonies of Volvox africanus were found in great abundance during the first two weeks of May, 1933, from a pond in Nanking.2. The smallest colony is much smaller than that recorded from Africa and the Philippine Islands.3. The somatic cells are not connected by protoplasmic filaments in adult colonies.4. Asexual colony usually contains from two to six daughters symmetrically arranged in pairs according to size on opposite sides of the polar axis.5. Sexual colonies of different kinds are developed...

    1. All kinds of colonies of Volvox africanus were found in great abundance during the first two weeks of May, 1933, from a pond in Nanking.2. The smallest colony is much smaller than that recorded from Africa and the Philippine Islands.3. The somatic cells are not connected by protoplasmic filaments in adult colonies.4. Asexual colony usually contains from two to six daughters symmetrically arranged in pairs according to size on opposite sides of the polar axis.5. Sexual colonies of different kinds are developed from the asexual mother either singly or in combination with other kinds and asexual daughters.6. Parthenogonidia develope very early in young embryos long before the latter become matured and escaped from the mother colony. 7. During the early development of parthenogonidia, at least from first to fifth or sixth divisions, no growth of the whole embryo takes the place while the number of cells increases.8. Spermatogonia attain fully-grown size and begin to divide before the time of the birth of the colony.9. The development of spermatogonium consists of seven successive divisions in forming a bundle or platelet of one hundred and twenty eight spermatozoa or microgametes.10. The number of ovaries in a female colony varies from twelve to fourty six. Generally, the larger the colony, the more the ovaries developed.11. Risexual colonies contain only two or three spermatogonia in addition to fourteen to twenty seven ovaries.12. In general, specimens recorded in Nanking are identical to those from the tropical regions such as Africa and the Philippine Islands.

    關於菲洲團走子之分佈,按記載所及。僅限於菲洲,菲列濱,南印度等熱带區域。今在南京發現,於地理分佈上實為一新記錄。此種團走子在羣體成熟之後,其體質细胞間,並無原生質線交相聯絡。無性羣體每含有二至六大小不同成對均置之無性幼羣體。幼羣體在脫離母體以前,往往含有第二代幼體。各種有性羣體,亦自無性母羣體中發達而成。雄性羣體,皆为橢圓形,而較其他羣體為小。雌性羣體中之卵或大配子约有十二至四十六。雙性羣體只含有二或三精原细胞,及十五至二十七卵或大配子。孤性生殖细胞在幼羣體内即發生。當最初五或六次分裂時,细胞雖增加,而幼胎並不長大。精原细胞经七次連續之均等分裂,而成一束一百二十八精子或小配子。

    1. An account is given of ten species of copepods collected from four lakes, Ching Hai (Chinghai Province), Tai Hai, Huangchi Hai and Ulasu Hai (Inner Mongolia) with description of three new species, namely, Arctodiaptomus spirulus (p1.Ⅰ, 5-7), Bryocamptus fed (pLs. Ⅳ & Ⅴ), from Ching Hai and Neutrodiaptomus genogibbosus (pL. Ⅱ, 11-14) from Ulasu Hai. A brief description of the larvae of an Argulus (Copepoda Branchiura) from Ulasu Hai is also included (pL. Ⅵ).2. The copepods so far found in Ulasu Hai are more...

    1. An account is given of ten species of copepods collected from four lakes, Ching Hai (Chinghai Province), Tai Hai, Huangchi Hai and Ulasu Hai (Inner Mongolia) with description of three new species, namely, Arctodiaptomus spirulus (p1.Ⅰ, 5-7), Bryocamptus fed (pLs. Ⅳ & Ⅴ), from Ching Hai and Neutrodiaptomus genogibbosus (pL. Ⅱ, 11-14) from Ulasu Hai. A brief description of the larvae of an Argulus (Copepoda Branchiura) from Ulasu Hai is also included (pL. Ⅵ).2. The copepods so far found in Ulasu Hai are more or less similar to those occurring in the fertile waters of the lower Yangtse Valley. It is, therefore, not surprising that the fish production in this lake is higher than that in the other three lakes.3. The distribution of the diaptomids seems to be related to the properties of the lake water, especially the differences in salinity. Thus, Arctodiaptomus spirulus is found only in Ching Hai; Arctodiaplomus rectispincsus is prevalent in Tai Hai as well as in Huangchi Hai; Ulasu Hai possesses two different diaptomids, Sinodiaptomus sarsi and Neutrodiapiomus genogibbosus.4. The species of Cyclopidae are more adaptive to the various kinds of water, so they have a wider range of distribution. Eucyclops serrulatus can survive in Huangchi Hai and even in Ching Hai, Cyclops vicinus, Cyclops strennus, and Thermocyclops hyalinus are found in Ulasu Hai as well as in Tai Hai and Huangchi Hai. Mesocyclops leuckarti is probably confined to fresh water and it is found only in Ulasu Hai.6. The species of Bryocamptus are generally found in the various kinds of water at high lands or among marshes. They are endurable to low temperature, high alkali and salinity. The new species, Bryocamptus feei, is found only in Ching Hai.6. A short review is made concerning the zoogeographical distribution of these copepods.

    (一)这四个湖的桡足类,共采得10种,共中有3种是新发现的种类,如激刺北镖溞、腹突荡镖溞和费氏瘦猛溞,已分别加以叙述。其他各种的性质,略记其要,以利鉴别。 (二)这四个湖在夏季中镖溞的数量远较剑溞的为多,而且按各个湖泊的特殊位 置和水性,各有特殊的镖溞。乌拉素海的桡足类与长江下游水质较肥的湖塘中的种类,很相近似,而且还存在着一种鲺(Argulus sp.)的幼体,而鲺是鱼类的一种敌害。 (三)镖溞的分布与湖水的理化坏境,有密切关系,特别是湖水所含盐类及其浓度,对它们的分布,似有显著的影响。如青海产有激刺北镖溞,岱海与黄旗海都有直刺北镖溞;乌拉素海却有一般淡水湖的镖溞,如萨氏中镖溞和腹突荡镖溞。 (四)这些剑溞的适应力都较强,能在各种湖水中生活。故分布也较广。如锯缘真剑溞是一习见的淡水种类,既见于黄旗海,也能在青海中生活。又如近邻剑溞、英勇剑溞和透明温剑溞除见于乌拉素海外,也能在岱海和黄旗海中生活。只有刘氏中剑溞,大概局限于一般淡水中。这次只发现于乌拉素海中。 (五)瘦猛溞属的一般种类,常生活在地势较高或低洼的水塘中,能耐低温、硷性或盐度较高的水质,故费氏瘦猛溞能在青海中生活。 (六)这些桡足类的属...

    (一)这四个湖的桡足类,共采得10种,共中有3种是新发现的种类,如激刺北镖溞、腹突荡镖溞和费氏瘦猛溞,已分别加以叙述。其他各种的性质,略记其要,以利鉴别。 (二)这四个湖在夏季中镖溞的数量远较剑溞的为多,而且按各个湖泊的特殊位 置和水性,各有特殊的镖溞。乌拉素海的桡足类与长江下游水质较肥的湖塘中的种类,很相近似,而且还存在着一种鲺(Argulus sp.)的幼体,而鲺是鱼类的一种敌害。 (三)镖溞的分布与湖水的理化坏境,有密切关系,特别是湖水所含盐类及其浓度,对它们的分布,似有显著的影响。如青海产有激刺北镖溞,岱海与黄旗海都有直刺北镖溞;乌拉素海却有一般淡水湖的镖溞,如萨氏中镖溞和腹突荡镖溞。 (四)这些剑溞的适应力都较强,能在各种湖水中生活。故分布也较广。如锯缘真剑溞是一习见的淡水种类,既见于黄旗海,也能在青海中生活。又如近邻剑溞、英勇剑溞和透明温剑溞除见于乌拉素海外,也能在岱海和黄旗海中生活。只有刘氏中剑溞,大概局限于一般淡水中。这次只发现于乌拉素海中。 (五)瘦猛溞属的一般种类,常生活在地势较高或低洼的水塘中,能耐低温、硷性或盐度较高的水质,故费氏瘦猛溞能在青海中生活。 (六)这些桡足类的属与种的地理分布,根据现有资料,亦略为述及,以明其分布趋势。

    Argulus tientsinensis sp. nov. is an ectoparasite of the yellow-barbeled catfish, Pseudobargrus fulvidraco (Richardson), found in Tientsin, China. Specific diagnosis is as follows: Female: 2.58-5.52 mm, in total length. Carapace orbicular in shape, 2.46-4.66 mm in length and 2.10-4.74 mm in width slightly longer than broad. A pigmented mass, dendritic in shape, showing on each lateral lobe Surrounding respiratory area, non-pigmented. Posterior sinus trapezoidal Diameter of sucking disk about 1/6 width of carapace,...

    Argulus tientsinensis sp. nov. is an ectoparasite of the yellow-barbeled catfish, Pseudobargrus fulvidraco (Richardson), found in Tientsin, China. Specific diagnosis is as follows: Female: 2.58-5.52 mm, in total length. Carapace orbicular in shape, 2.46-4.66 mm in length and 2.10-4.74 mm in width slightly longer than broad. A pigmented mass, dendritic in shape, showing on each lateral lobe Surrounding respiratory area, non-pigmented. Posterior sinus trapezoidal Diameter of sucking disk about 1/6 width of carapace, chitinized rods in sucking disk 43-49 in number. Abdomen 0.63-1.13 mm in length and 0.36-0.94 in width longer than broad. Anal papillae basal. Anal sinus about 1/2 length of abdomen.Male: Generally smaller than female, 3.00-4.32 mm in total length. Carapace 1.93-3.48 mm in length, and 1.98-3.18 mm in width. Abdomen, 0.68-1.01 mm in length, and 0.57-0.93 mm in width. Second pereiopod possessing a mitral-shaped process on posterior edge of coxal segment. Third pereiopod possessing a semicircular-shaped posterior capsule on posterior edge both of coxal and basal segments. Fourth pereiopod possessing a projected peg on top of basal segment.The first maxillipeds of three different stages of the larvae in metamorphosis are described. By basing upon the fact shown in the metamorphosis of the first maxilliped of the larval stages, the genus Huargulus seems to be one of the larval stages of the genus Argulus. So the genus Huargulus becomes invalid.This new species was secured from, the lateral line, the surface of abdomen, the gills, and the mucous membrane of the oral cavity of the yellow-barbeled catfish. The last-named location of the parasite is for the first time recorded.

    天津鲺是寄生于天津黄颡鱼体外的一种新鲺。雌鲺全长2.58—5.52毫米。背甲略呈圆形,长2.46—4.56毫米,阔2.10—4.74毫米,长度大于宽度。侧叶中央,向两侧各见有一条树枝状的色素条。呼吸区的外围无色素。后窦梯形。吸盘的直径为背甲宽度的1/6,几丁质条有43—49。腹部长0.63—1.13毫米,阔0.36—0.94毫米,长度大于宽度。尾叉基位。肛窦为腹长的1/2。一般雄性小于雌性,全长3.00—4.32毫米。背甲长1.96—3.48毫米,阔1.98—3.18毫米,无色素。腹部长0.68—1.01毫米,阔0.57—0.93毫米。第2对游泳足的底节后缘有一个僧帽状突起。第3对游泳足的底节与基节的后面有一个半圆形的囊状突起。第4对游泳足的基部顶上,有一个凹形的栓。 三个不同时期的幼体,叙述了小颚变态的过程,从小颚的变态,也证明了胡氏鲺属是鲺属的一个幼体期。 本新种寄生在黄颡鱼的侧线、腹壁、口腔黏膜与鳃等部,寄生于口腔黏膜上,在以前 的文献中,尚无记载。

     
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