| 1. | Under conditions of easterly flow, therefore, or very large westerly flow no vertical propagation will occur .
所以在东向气流或很大的西向气流的情况下，将不发生垂直传播。 |
| 2. | The direct mother - to - baby transmission of aids was reported early in 1982
由母亲垂直传播的儿童艾滋病最早在1982年报道。 |
| 3. | Clinical study on hbig interrupting hbv of mother - infant perpendicular dissemination
乙型肝炎免疫球蛋白阻断乙肝病毒母婴垂直传播临床研究 |
| 4. | Vertical transmission of hepatitis b virus ( hbv ) can occur occasionally despite vaccination of the child
乙型肝炎病毒的垂直传播可能偶发于接种了乙肝疫苗的孩子中。 |
| 5. | Reaction to fire tests - spread of flame - intermediate - scale test of vertical spread of flame with vertically oriented specimen
对火试验的反应.火焰扩散.垂直定向样品火焰垂直传播的中型试验 |
| 6. | But also the experiment makes clear , the experiment contains flu virus in the egg of infection chicken , because this cannot eliminate the possibility of perpendicular transmission completely
但也有实验表明，实验感染鸡的蛋中含有流感病毒，因此不能完全排除垂直传播的可能性。 |
| 7. | It is found that the first , second and third types of connective tissue cells , which are analogous to crustacean haemocytes , are probably the originations of the renovation of epithelial cells
病毒粒子呈圆形，直径约100urn ，外有膜包被。在输卵管管壁上皮细胞中存在病毒粒于，是甲壳动物病毒具有垂直传播途径的一个重要证据。 |
| 8. | But ib attenuated vaccine has many defects , such as the possibility of contamination of foreign and vertical transmissible pathogens , and the virulent recovery of vaccine virus . therefore , exploring the safe and efficient new vaccines has become the hotspot in the research of ib control
由于活疫苗存在外源性或垂直传播性病原污染、毒力返祖等缺陷，开发安全、有效的新型疫苗是ib控制的研究重点。 |
| 9. | Avian encephalomyelitis virus ( aev ) is a picornavirus with a predilection for the central nervous system and other parenchymous organs of chickens that is transmited by the oral - faecal route . the virus may be spread by the vertical and horizontalroutes , and because of its great stability , contaminated areas may remain infectious for long periods . the egg - adapted van roekel strain is highly neurotropic and does not grow efficiently in the enteric tract of the chicken , and the field isolates of aev is usually enterotropic . despite this . the virion polypeptides of both naturally - occurring strains and the van roekel strain are antigenically identical
侵害鸡的中枢神经系统和其它实质性器官，该病毒通过口-粪途径传播，具有水平和垂直传播的能力。由于它极大的稳定性，被污染的区域可能长期保持传染性。鸡胚适应株vanroekel是高度嗜神经的，并且在鸡的肠道内不能有效的生长，而野毒株却是嗜肠道型的。 |
| 10. | Looking into the present state of organization communication system , the author finds that organization communication in the process of agricultural science and technology is basically a vertical structure from top to bottom . information spreads by way of interpersonal communication in communities after entering into fundamental social communities of rural areas
对组织传播机制的分析是基于组织传播的现状，发现组织在传播农业科技过程中，主要是一种自上而下的垂直传播，信息进入农村初级社会群体后最终还是通过群体内外的人际交往来传播。 |
