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媒介
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    The ecological Characteristics of Paradoxopsyllus kalabukhovi and Their Vector Significance
    喉瘪怪蚤的某些生态特点及媒介意义
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    Situation of Study on Analysis Biochemistry of Vector Mosquitoes
    媒介蚊虫分析生物化学研究概况
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    Application on Management System of Vector Measure Data with Computer
    电子计算机在媒介生物监测资料管理中的应用研究
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    The measures and methods of vector control for establishing sanitary port in Zhanjiangport
    湛江港在创建卫生港活动中防制媒介生物的措施与方法
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    Influence of climate factors on vector aedes density of dengue
    气候因素对登革热媒介伊蚊密度影响的研究
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    The Evaluation on the Effect of Controlling Dengue Fevervehicle Synthetically from 1999 to 2000 in Fuzhou
    1999至2000年福州市登革热媒介综合防制措施与效果评价
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    The Analysis of Relationship Between Malaria Morbidity and Distribution of Their Vectors from 1994 to 2003 in Hubei Province
    湖北省1994至2003年疟疾发病与媒介分布
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    ANALYZE THE SURVEILLANT RESULTS OF DIFFERENT INTERMEDIUM malaria regions in ChongQing after malaria was perished
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    SURVEILLANT RESULTS OF THE INSECTICIDE SENSITY TO THE DIFFUSE MALARIA VECTORS IN CHONGQING MUNICIPAL
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  vector
We give explicit systems of generators of the algebras of invariant polynomials in arbitrary many vector variables for the classical reflection groups (including the dihedral groups).
      
The least upper bound for the degrees of elements in a system of generators turns out to be independent of the number of vector variables.
      
(HereM3 denotes the vector space of 3×3 matrices over k andp>amp;gt;3.) The method of proof involves an induction, and is potentially of wide applicability.
      
A basis is calledmonomial if each of its elements is the result of applying to a (fixed) highest weight vector a monomial in the Chevalley basis elementsYα, α a simple root, in the opposite Borel subalgebra.
      
The proof is based on a variant of Moser's method using time-dependent vector fields.
      
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An investigation on the components of the vectorial capacity of A. sinensis was carried out in Liji Commune of Peixian County, Jiangsu Province from 1979 to 1981. and the results are given as follows: 1. The average man-biting rate of A. sinensis calculated by outdoor human bait collection was 33.0, but the rate would be 11.0, one third of the former if measured by using mosquito net after 22 o'clock. The man-biting rate from July 21 to September 10 was relatively higher, forming a peak in August. 2. Observation...

An investigation on the components of the vectorial capacity of A. sinensis was carried out in Liji Commune of Peixian County, Jiangsu Province from 1979 to 1981. and the results are given as follows: 1. The average man-biting rate of A. sinensis calculated by outdoor human bait collection was 33.0, but the rate would be 11.0, one third of the former if measured by using mosquito net after 22 o'clock. The man-biting rate from July 21 to September 10 was relatively higher, forming a peak in August. 2. Observation on blood digestion and ovary development and on the freshly blood-engorged females of A. sinensis put into vials separately for ovipositipn suggested that an average of 2.5 days was needed to complete a gonotrophic cycle, and for the first gonotrophic cycle after emergence about 3.5 days were needed. 3. A total of 11,186 inosquitos of A. sinensis have been dissected within the three years, the parous rates being 0.581-0.621, and the daily survival rate 0.856-0.873. 4. 3,755 specimens of blood meal of A. sinensis were collected from human dwellings and cattle sheds at the daytime, making the ratio of human blood-fed 17.1%; 1,273 specimens were from the bean field, the ratio of human blood-fed 2.6%. Adjusting the result with different resting places and host preference, the human blood index of A. sinensis estimated in this area was 0.104.

本文报告1979~1981年在江苏邳县李集公社对中华按蚊媒介能量组成因子的现场调查结果。从室外人饵诱捕法调查结果表明,叮人率调查既可代表种群消长的自然趋势,亦可大略地反映人蚊接触的定量关系;但对人群的实际吁人率尚需寻找更有代表性的调查方法。中华按蚊羽化后完成第一个生殖营养周期约需3.5天,其后续各生殖营养周期平均为2.5天。通过检查雌蚊卵巢气管技或卵小管膨大部,求得年平均经产蚊比率为0.581~0.621,推算每天存活率为0.856~0.879。从白天栖息场所采集标本进行胃血沉淀反应试验测得的结果,结合中华按蚊夜间吸血趋向性调查进行适当的校正,推算其人血指数平均为0.104。

In 1957. we discovered a new species of Trombicula in gaohu, Qingtian. mountainous region of south Zhejiang. which is the dominant species in that locality. Its seasonal and geographical distribution are consistent with tbe epidemic of tsutsugamushi disease. The Rickettsia tsutsugamushi had been isolated from the larva hosts and patients at the same time. It was confirmed by epidemiological investigation that this tsutsugamushi is a new vector of tsutsugamushi disease. This Trombicula was discovered first time...

In 1957. we discovered a new species of Trombicula in gaohu, Qingtian. mountainous region of south Zhejiang. which is the dominant species in that locality. Its seasonal and geographical distribution are consistent with tbe epidemic of tsutsugamushi disease. The Rickettsia tsutsugamushi had been isolated from the larva hosts and patients at the same time. It was confirmed by epidemiological investigation that this tsutsugamushi is a new vector of tsutsugamushi disease. This Trombicula was discovered first time in Gaohu and was named Trombicula (Leptotrombidium) Caohuensis nov sp. This rteport had been published in 1960.In July 1984. we tested a biting experiment by setting 11 larvae of the tsutsugamushi on our own forearms and confirmed that the Trombicula had the ability of stinging and biting human bodies, and that this ability persisted after the changing of hosts (from mouse to man). This test provided a new evidence of vector effect of Trombicula Caohuensis nov sp in ecology.

1957年我们在浙南山区青田县高湖发现一新种纤恙螨,为当地优势螨种;其季节消长、地理分布与恙虫病的流行相一致;自该螨幼虫及其寄生宿主和病人中同时分离出恙虫病立克次体,经流行病学调查证实该螨为恙虫病的新媒介。因在国内首次发现于高湖,故定名为高湖恙虫(新种)[Trombi-cula(Leptotrombidium)Gaohuensis nov sp]。曾在1960年公开发表。 1984年7月以11只高湖纤恙螨幼虫在作者身上作叮咬试验,证明该螨具有叮咬人的能力;在转换新宿主后(鼠→人)仍能再叮咬;该螨接触人体后至少经过35分钟的徘徊,才开始叮咬。叮人试验获得成功,为确定高湖纤恙螨的媒介作用,从生态学方面提供了新的科学依据。

An epidemiological survey had been carried out from 1975 to 1980. Most of the patients were clustered in Xiaheying Commune and Maola Commune. The positive rates of Leishmania shin test in human population of this area were 81.8% and 33.6% respectively. The positive rate of the said skin test for infants experiencing in a sandfly season was 7.31%. Infants and young children accounted for most of the patients. There was notany epidemiologic association between individual patients. Phlebotomus major wui is verified...

An epidemiological survey had been carried out from 1975 to 1980. Most of the patients were clustered in Xiaheying Commune and Maola Commune. The positive rates of Leishmania shin test in human population of this area were 81.8% and 33.6% respectively. The positive rate of the said skin test for infants experiencing in a sandfly season was 7.31%. Infants and young children accounted for most of the patients. There was notany epidemiologic association between individual patients. Phlebotomus major wui is verified as the vector. Rats and domestic dogs are not main reservoirs. The other animal reserviors remain to be verified. Based on these epidemiologic characteristics, the authors think this area should be a natural focus of kala-azar. And it can be typed as desert kala-azar.

本文报告了新疆巴楚垦区1975~1980年黑热病流行病学调查结果。患者多集中在夏河营及毛拉公社,人群利什曼素皮内试验阳性率分别为81.8%和33.6%。经过一个白蛉季节的婴儿皮内试验阳性率为7.31%。病人以婴幼儿为主,各病例间无任何流行病学联系。媒介昆虫为硕大白蛉吴氏亚种。鼠类和家犬不是主要保虫宿主,其它动物保虫宿主待查。根据流行病学特征,该地黑热病在分型上属于荒漠型。该垦区为黑热病自然疫源地。

 
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