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field outbreak中文是什么意思

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用"field outbreak"造句"field outbreak"怎么读"field outbreak" in a sentence

中文翻译手机手机版

  • 现场爆发

例句与用法

  • The conditions under which field outbreaks take place are fairly defined .
    在野外情况下的发病已充分肯定。
  • More importantly , all the strains isolated after 1998 belonged to genotype vfl and 8 out of 15 strains isolated after 1990s were in this group . the results showed that genotype vii viruses were the predominant nd viruses responsible for field outbreaks in china in recent years
    属于姐型的8个毒株在90年代以后分离株中占有最大的比例且全部是97年以后分离的, 98年以后分离的ndv毒株均属于vii型,说明vll型毒株是我国部分地区正在发生nd流行的优势基因型,与国内外报道的第四次大流行的流行特征一致。
  • The results of biological tests have demonstrated that allantoic fluid of the first passage virus did n ' t produce macroscopic pathogenic role to chicken embryos and after passaged for four times , gross lesions were observed in chicken embryo . the virus showed typical coronavirus under electron - microscope and it could n ' t form plaque in cef cells and could hemagglutinates chicken red blood cells after treatment with 1 % trypsin . to surprise , the virus replicated in cef cells also showed hemagglutination activity to chicken red blood cells . in addition , the spf chickens which inoculated with the virus isolated from the chicken damaged tissue showed clinical sign and grow lesion , but it ' s gross lesion did n ' t resemble to those of field outbreaks
    生物学特性:鸡胚尿囊液经离心、磷钨酸负染后,电镜观察该病毒为典型的冠状病毒;该毒株的第一代尿囊液对鸡胚无肉眼可见的致病作用,当继代到第5代后,胚体严重病变;病毒在鸡胚中随着接种时间的延长,其效价增高, 96h可达到48h的2倍;该毒株可在cef上生长,但不能形成明显的蚀斑;经1胰酶处理后可凝集鸡红细胞;鸡胚的第四代尿囊液病毒回归动物体,病死鸡肾脏呈典型的花斑肾,腺胃则未见肉眼可见的病变。
用"field outbreak"造句  
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