After the 1960 s, China began to inoculate BCG, pertussis, diphtheria, tetanus, measles and poliomyelitis vaccines.六十年代后, 中国开始在大、中城市接种卡介苗 、 百日咳 、 白喉 、 破伤风 、 麻疹、脊髓灰质炎的疫苗的工作.Recombinant BCG vaccine is a new type of vaccine...
The eye is a complex and highly developed photosensitive organ.眼是复杂而且高度精密的感光器官.It is the good stabilizer of photosensitive resin, sensitive emulsion, synthetic resin.是光敏树脂 、 感光乳剂 、 合成树脂的良好稳定剂.Whirler: Machine which appli...
这种重要的碳化物向晶体内和晶体间沉淀.This important carbide precipitates both inter and intragranularly.Fe -Cr-C 耐磨堆焊合金中初生碳化物生长方向的控制.Orientation control of primary carbide in Fe - Cr - C hardfacing alloys.提出了避免碳化物带状偏析的有效措施.The effective m...
河水在平坦的河床上减慢了流速.The river slows on the flat bottom.缓慢的流速足以防止还原剂的散失.A low rate is enough to prevent flushing of reductants.进口的流速不等于河水流速.The velocity in the intake is not equal to the stream velocity....
a cautionary tale about the problems of buying a computer有关购买计算机时可能遇到种种问题的告诫An editorial in The Times sounds a cautionary note.《泰晤士报》的一篇社论读起来颇有警诫意味。Barely fifteen months later, it has become a cautionary tale of the pitf...
在这种情形下，他们遇到困难就不足为怪了。Under such circumstances, it is little wonder that they experience difficulties.如果你遇到难题的话他们会帮助你。They will be there to help if you get stuck.布鲁克先生肯定遇到了点小麻烦。Mr Brooke is undoubtedly in a spot of bother....