Infectious bursal disease virus ( IBDV ) is an important pathogenic agent of chicken.传染性法氏囊 病毒是鸡的一种重要的病原.The distribution and histology of lymphoid tissue in the Fabricius'bursal stalk were studied.研究了番鸭法氏囊柄部淋巴组织的分布...
通用的纯粹机械的积分器是圆盘滚柱型.A common purely mechanical integrator is the disk - roller type.介绍了一种采用惠斯登电桥放大器 、 积分器、比较器等组成的电阻 - 频率变换器.A resistance - to - frequency converter using a bridge amplifier, an intergrator and a comparator ...
There must be no delay in forwarding the goods.发送货物不得延误.About 2 years related working experience in airfreight or ocean forwarding industry.两年以上相关空运或海运货运代理操作经验.Problems encountered while specifying the location for Moder...