查询词典 virus

These crops can be completely destroyed when infected by Zucchini yellow mosaic virus, Watermelon mosaic virus, and/or Cucumber mosaic virus.

这些作物能被小西葫芦黄化花叶病毒、西瓜花叶病毒-2号（WMV-2）、黄瓜花叶病毒严重毁坏。

Detection of the virus hard disk boot sector can be divided into the detection of virus and virus detection files.

检测硬盘中的病毒可分成检测引导区型病毒和检测文件型病毒。

Compared with classical cytotoxic T lymphocytes , NK cells are superior in the following aspects: NK cells are among the first cell types to be activated after intracellular pathogen stimuli, the activity of NK cells peaked between 1 to 3 days, retained during the first 7-10 days, and the T cells response emerged only after 7 days when the NK cell responses begin to decline; though comprising of only 10％-15％ of peripheral lymphocytes, NK cells mobilize most of the cell populations in a strong and high level response to different invasions, and act as key factors at early defense before a specific immune response could mount, while only certain clones were involved in T cell response; NK cells kill virus-infected or malignant transformed cells without pre-sensitization and without restriction by major histocompatibility antigen, which is usually a mechanism of immune escape to T cell recognition by virus-infected or tumor cells, thus NK cell in complementary with T cells play crucial roles in tumor and virus eradication.

NK细胞以其强大的细胞毒活性为特征，与细胞毒性T细胞相比，NK细胞具有如下特点：NK细胞虽然只占外周血淋巴细胞的10-15％，但是对刺激性因素产生应答的过程十分迅速，一次可以调动大多数细胞共同参与，而不是几个克隆的活化，免疫应答的强度高；病毒感染或恶性转化细胞的一个主要特征是细胞表达的MHCⅠ类分子下降或消失，并借助这一机制逃避特异性T细胞应答的识别，NK细胞介导的杀伤活性无需抗原刺激，不受MHCⅠ分子表达的限制，从而与T细胞应答互为补充发挥免疫防御的功能；NK细胞的免疫活性可以被多种细胞因子上调，其中IFNα，IL-2，IL-12，IL-15和IL-18具备更强的作用；NK细胞具有强大的细胞因子分泌功能，对于启动T细胞特异性应答必不可少。

Second, the wrong understanding of the virus "will be changed to read-only files can be infected from the virus": Some people believe that the adoption of external DOS command ATTRIB, will be set to read-only files will be very effective against the virus.

"将文件改为只读方式可免受病毒的感染"：某些人认为通过DOS的外部命令ATTRIB，将文件设置为只读会十分有效的抵御病毒。

AIDS "may be more difficult to transmit than herpes," says Montefiore's Friedland."A number of pieces of information suggest that you need a large amount of virus." Studies of the sex partners of AIDS victims -- people who have had hundreds of sexual encounters with carriers of the virus -- show that 40% to 50% do not become infected with the virus.

蒙特菲里的弗雷兰德说：诸多信息表明只有大量的病毒才能使人染病，通过对由异性交合而感染艾滋病患者的研究显示40%至50%的人不会成为病毒的感染者，那些受感染的通常是与带有艾滋病毒的人有很多次的交合。

After years of research, exploration, the successful realization of Scleroderma guani, Zhou's rodents wasps, Trichogramma, Anastatus Bee, Lai aphid wasps, pulp Kok aphid wasps, Coccinella septempunctata, grass Chrysopa septempunctata, Yang Fan-moth virus, Lymantria dispar virus, the virus, such as spring geometrid more than 10 natural enemies of insect pathogens and insects breed of industrial production.

经多年的研究、探索，已顺利实现管氏肿腿蜂、周氏啮小蜂、赤眼蜂、平腹小蜂、丽蚜小蜂、浆角蚜小蜂、七星瓢虫、草蛉、杨扇周蛾病毒、舞毒蛾病毒、春尺蠖病毒等十几种天敌昆虫及昆虫病原体的周年工厂化繁殖生产。

Reporter from the country 863 plans " the real time that is based on program behavior to parse judgement independently defends technology " the understanding on this seminar that task group holds arrives, the computer virus in the past a characteristic is " caustic person is not hoggish ", virus fabricant does not get real benefit in the hope transmission from virus.

记者从国家863计划"基于程序行为自主分析判断的实时防护技术"课题组召开的这次研讨会上了解到，过去的计算机病毒一个特点是"损人不利己"，病毒制作者并不指望从病毒的传播中得到实在的利益。

Bird flu is one kind of the violent infectious disease being able to affect the various feather and person , whose sub virus type is a lot of , host range is broad, virus is easy to dissociation happened and re-organize , is virus's turn to be able to break the interspecific crossing obstacle affecting person , have common important hygienics significance.

禽流感是一种可以感染多种禽类和人的烈性传染病，其病毒亚型众多，宿主范围广，病毒容易发生变异和重组，该病毒可以突破种间障碍感染人，具有重要的公共卫生学意义。

Biology technique is based on appearance symptom on sweet potato or Ipomoea Setosa after they are infected to identify virus. But it need long period and is apt to be limited by season. Based on coat protein of virus, serology detects virus during peculiar immunolog...

生物学方法是依据病毒侵染后在甘薯或指示植物上的外观症状进行识别，但检测速度慢，易受季节限制；血清学技术是利用病毒外壳蛋白的抗原性，据特异性的抗体抗原免疫学反应检测病毒存在，但制备抗血清需时间长，对含量少和无蛋白外壳的病毒无法检测；分子生物学方法是以核酸为基础，通过检测病毒核酸来证实病毒的存在，该技术具有灵敏度高、特异性强、适应范围广等特点。

Sequence comparisons showed that the DNA-A sequence of SPLCV-CN were closely related to those of sweet potato leaf curl Georgia virus-[16] (SPLCGV-[16]), Ipomoea yellow vein virus and sweet potato leaf curl virus with nucleotide sequence identity ranging from 88% to 91%.

而由同源性分析得知，SPLCV-CN与SPLCGV-[16]、IYVV和SPLCuV相比对，DNA-A的同源性在88％-91％之间，外壳蛋白的同源性在93％-96％之间。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。