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大规模死亡
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  mass mortality
     Cause Analysis and Prevention of Mass Mortality of Tegillarca Granosa Cultured in Shrimp pond
     虾塘养殖泥蚶大规模死亡原因及防治对策
短句来源
     Analysis of the Causes of Mass Mortality of Chlamys farreri in Sanggou Bay
     桑沟湾栉孔扇贝大规模死亡原因分析
短句来源
     Then a series of studies were given to study the correlations between environmental factors, biologic factors, pathogen, and the mass mortality and anti-disease of the scallop C.
     通过一系列野外调查实验和室内模拟实验,研究了环境因子、生物因子以及病原与栉孔扇贝的抗病力和大规模死亡之间的关系。
短句来源
     The incidence of mass mortality of Chlamys farreri cultured in the coastal farming areas of Shandong Province during summer led us to investigate into its causes.
     在对夏季高温期山东沿海栉孔扇贝(Chlamys farreri)大规模死亡现状调查的基础 上,从山东沿岸栉孔扇贝养殖业发展的历史、生态、环境和种质等方面分析了栉孔扇贝大规 模死亡的原因。
短句来源
  massive mortality
     Massive mortality occurred at all three sites during the period of middle of July to early August, and reached 90%, 89% and 85% at JN, PL and YT, respectively.
     三个实验点在7月中旬至8月初都发生了大规模死亡,最终死亡率分别达到90%、89%和85%。
短句来源
     The viral pathogen of massive mortality in Chlamys farrei
     栉孔扇贝大规模死亡致病病原的研究
短句来源
     ISOLATION AND CHARACTERIZATION OF VIBRIO ALGINOLYTICUS AS A PATHOGEN TO THE MASSIVE MORTALITY OF ABALONE(HALIOTIS DIVERSICOLOR)POSTLARVAE
     南方杂色鲍苗大规模死亡病原菌的分离鉴定及其回归感染试验
短句来源
  extensive death
     The bacteria separated before and after the extensive death of juvenile abalone were Vibrio tubiashii and Vibrio sp.
     在鲍苗大规模死亡前后分离的细菌经过鉴定为塔式弧菌及Vibrio sp.
短句来源
     The relationship between extensive death of larvae of abalone Haliotis divesicolor Reeve and number of bacteria
     杂色鲍幼苗大规模死亡与细菌数量的关系
短句来源
     Shellfish aquaculture is the pillar industry of the marine economy in our country. Because the extensive death of the shellfish takes place occasionally in recent years, the disease has already become the choke point of development of shellfish aquaculture.
     贝类养殖业是我国海洋经济的支柱性产业,由于近年来养殖贝类的大规模死亡现象时有发生,病害日渐严重,已成为贝类养殖业发展的瓶颈问题。
短句来源
  “大规模死亡”译为未确定词的双语例句
     White Spot Syndrome Virus (WSSV) is the causative viral pathogen of a deadly disease of cultured shrimp.
     白斑综合征病毒(white spot syndrome, WSSV)是引起养殖对虾大规模死亡主要病毒性病原。
短句来源
     Based on the results obtained, the disease was named "acute virus necrobiotic disease (AVND)".
     结果显示,一种球形病毒是导致该病害爆发的直接病原,并将“扇贝大规模死亡”这一现象明确定义为“急性病毒性坏死症”(Acute virus necrobiotic disease,AVND)。
短句来源
     The results show that,the virus content in one year old scallop Chlamys farreri reaches the highest level in August,whose P/N and OD value are(0.8305) and 2.23 respectively,which is the same with the death time of scallop Chlamys farrer in large scale.
     结果表明一龄栉孔扇贝体内病毒粒子的含量在8月份最高,其P/N值和OD值分别为0.8305和2.23,与栉孔扇贝大规模死亡时期相一致。
短句来源
     The mortality of cultured Litopenaeus vannamei exceeding 90% occur in October, 2003 at a shrimp farm in Jiaozhou, Qingdao.
     2003年10月,青岛胶州市对虾养殖场养殖的凡纳滨对虾发生大规模死亡,死亡率达90%。
短句来源
     Production and Application of Monoclonal Antibodies for Detection of the Epizootic Pathogen-AVND Virus in Scallop Chlamys Farreri
     栉孔扇贝(Chlamys farreri)大规模死亡病原—AVND病毒单克隆抗体的制备及检测技术研究
短句来源
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  mass mortality
The simultaneous increase in the adrenal index and decrease in the liver index of rodents in autumn are indicative of exhaustion, which leads to an energy breakdown and mass mortality.
      
It was shown that heavy metals were not responsible for the mass mortality of these birds in southern Primorye in the winter of 2001-2002.
      
Mass mortality was observed in ruffe from 1997 to 1999.
      
The reasons for ruffe mass mortality in a range of waterbodies are analyzed based upon literature data.
      
A outbreak of disease with symptoms of evisceration and skin ulteration led to mass mortality in sea cucumber Apostichopus japonicus cultivated in indoor ponds near the Dalian coast from December 2004 to April 2005.
      
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  massive mortality
Occurrence of detritivores seemed to be negatively related to the degree of thermal pollution, which provoked massive mortality and important detritus production resulting from internal stress caused by rapid temperature variations.
      
Reef recovery 20?years after the 1982-1983 El Ni?o massive mortality
      
A major objective was to clarify ecological relationships between the symbionts, and to infer the relationship between symbiosis and the massive mortality.
      
Conversely, severe infrequent storm disturbances that cause massive mortality to all coral species wipe out the pattern of community structure and return the entire community to a low diversity early successional stage.
      
Storm floods on the night of December 31, 1987 reduced salinity to 15‰ in the surface waters of Kaneohe Bay, resulting in massive mortality of coral reef organisms in shallow water.
      
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  extensive death
Surpass 400 with UWA 192), extensive death of epidermal and upper and lower palisade cells occurred throughout infected areas of the cotyledon, with subsequent abundant production of pycnidia.
      
A drought period might have caused more extensive death of fine roots on one of the three plots examined.
      
A drought period might have caused more extensive death of fine roots on one of the three plots examined.
      
In many cases unchecked growth of the organism may lead to extensive death.
      
Prior to the human outbreak, the H5N1 virus was found to cause extensive death in chickens in three farms in Hong Kong.
      


here was an outbreak of an acute lethal disease of prawns(Penacus chinesis osbeck) in manyshrimp farms in Shanghai suburb. Electron microscopic examination of ultrathin section of theliver, pancreas and mid-gut gland tissues revealed the presence of rod-shaped baculovirus par-ticles in the affected cell nuclei.The viral nucleocapsids were surrounded by envelopes of abi-or trilaminal unit membranes. In ultra-thin section,the enveloped virus particles ranged insize of 440-500nm in length and 170-180nm in breadth,whereas...

here was an outbreak of an acute lethal disease of prawns(Penacus chinesis osbeck) in manyshrimp farms in Shanghai suburb. Electron microscopic examination of ultrathin section of theliver, pancreas and mid-gut gland tissues revealed the presence of rod-shaped baculovirus par-ticles in the affected cell nuclei.The viral nucleocapsids were surrounded by envelopes of abi-or trilaminal unit membranes. In ultra-thin section,the enveloped virus particles ranged insize of 440-500nm in length and 170-180nm in breadth,whereas the nucleocapsids insize of 330-420nm and 110-140nm respectively.Using the comination of the treatment of organicsolvent,differential and sucrose gradient centrifugations,a partial purified viral nucleocapsidpreparations could be obtained. The sizs of isolated nucleocapsids in negatively stainedsamples ranged 350-400nm in length and 70-85nm in breadth.The 10nm of periodicity ofsurface stritions of the negatively stained nucleocapsids were clearly revealed by electronmicroscopy.Occasionally,two nucleocapsids enclosed within a single envelope could be ob-served in both negatively stained preparations and ultrathin sections.No occlusionbodies have been found.Consequently,the baculovirus we observed could be a member ofsubgroup C of baculoviruses.Artificial inoculation experiments of healthy prawns were carried out either by injection orby feeding of partiadiy purified virus prepamtions. The lethal rate reached to 90% and 100%in two injection experiments,whereas the lethal rate ouly reached 50%,40% and 50% in threefeeding experiments. Moreover,the symptoms which appeared after artifcial inoculation werevery similar to those shown by the diseased prawns under natural conditions. These resultsstrongly support the conclusion that the baculovirus found by us is the lethal pathogen for theprawn disease in Shanghai.

近年来,上海郊区饲养中国对虾(Penacuschinesisosbeck)的虾塘发生大面积的流行病。经对病虾的鳃、肝、胰腺或中肠组织进行超薄切片处理及电镜观察,发现在这些组织的细胞核内存在大量有囊膜包裹的杆状病毒,有时一个囊膜还可同时包裹两个病毒的核衣壳。经有机溶剂处理、差速离心及密度梯度离心,可以获得部分提纯的病毒和病毒核衣壳制剂。超薄切片中,病毒粒子大小约为440-500×170-180nm,核衣壳大小约330-420×110-140nm,提纯的核衣壳粒子大小约为350-400×70-85nm。无论在超薄切片或在分离提纯的制剂中,均未观察到有包涵体存在。将部分提纯的病毒制剂人工感染健虾,结果发现肌注的对虾死亡率达90%以上,饲毒的死亡率各在50%左右。这些结果证明,所发现的杆状病毒可能就是引起这次上海郊区对虾大规模死亡的主要原因。

From July to Sept, 1998, the pathological chanes of the mass mortality of Chlamys farreri in Chandao and Yantal disincts of Shandong province were studied by light and electron nicroscopes. Two parasitic organisms were discovered in Chlamys farreri. They are Chlamydia-like Organisms (CLO)and Rickettsia-like Organisms (RLO). Under the light microscope, the organisms parasitized in Chlamys farreri appeared as eosinophilic intracytoplasm inclusions, the inclusion was Gram-weigert negative and caemsa positive. Ultrastructurally,...

From July to Sept, 1998, the pathological chanes of the mass mortality of Chlamys farreri in Chandao and Yantal disincts of Shandong province were studied by light and electron nicroscopes. Two parasitic organisms were discovered in Chlamys farreri. They are Chlamydia-like Organisms (CLO)and Rickettsia-like Organisms (RLO). Under the light microscope, the organisms parasitized in Chlamys farreri appeared as eosinophilic intracytoplasm inclusions, the inclusion was Gram-weigert negative and caemsa positive. Ultrastructurally, CLO appeared to have three stages:initial bodies, intermediate bodies and elementary bodies; RLO undrwent typical pregranular and granular developmental stages with outer puffy trilaminar membranes. It is regardd as RLO and CLO that had caused the mass mortality of Chlamps farreri.

于1998年7-9月,在发生贝类大规模死亡的山东省长岛县和烟台四十里湾养殖区,选取濒死的栉孔扇贝,通过组织病理分析和电镜观察,发现大量寄生原核生物──衣原体样原核生物(Chimpdia-likeOrganismsCLO)和类立克次氏体(Rickettsia-likeOrganisms,RLO)。病理学研究表明,寄生原核生物(CLO和RLO)造成栉孔扇贝组织细胞严重病变,可能是引起栉孔扇贝大规模死亡的重要原因。

The incidence of mass mortality of Chlamys farreri cultured in the coastal farming areas of Shandong Province during summer led us to investigate into its causes. From an analytical approach based on a consideration of the developmental history of its culture, ecological and environmental factors of the farming areas, and germplasm features, we are in elmed to believe that the main reasons could possibly be adverse environmental conditions or aging of environment brought about by long-term, continuous high...

The incidence of mass mortality of Chlamys farreri cultured in the coastal farming areas of Shandong Province during summer led us to investigate into its causes. From an analytical approach based on a consideration of the developmental history of its culture, ecological and environmental factors of the farming areas, and germplasm features, we are in elmed to believe that the main reasons could possibly be adverse environmental conditions or aging of environment brought about by long-term, continuous high stocking density resulting in decline of environmental tolerance of cultured species, but high water temperature, shortage of food, higher consumption of the scallops, self-pollution and pathogen blooms in summer may be the more direct causes.

在对夏季高温期山东沿海栉孔扇贝(Chlamys farreri)大规模死亡现状调查的基础 上,从山东沿岸栉孔扇贝养殖业发展的历史、生态、环境和种质等方面分析了栉孔扇贝大规 模死亡的原因。认为大规模死亡的根本原因是长期密集养殖导致养殖环境的老化或恶化及 栉孔扇贝抗逆能力的下降;而在夏季高温期,海区饵料明显不足,栉孔扇贝本身消耗增大、 养殖水体自身污染加剧及病原体大量滋生等是更为直接的原因。

 
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