The recent outbreaks of cholera are a timely reminder that this disease is still a serious health hazard.最近霍乱的爆发及时提醒了人们该疾病仍然会严重危害健康。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....
The recent outbreaks of cholera are a timely reminder that this disease is still a serious health hazard...最近霍乱的爆发及时提醒了人们该疾病仍然会严重危害健康。The recent outbreaks of cholera are a timely reminder that this disease is still a ser...
Ventilation resistance and ventilation isobar in the workings were measured with barometer.采用气压计混合读数法测定了综放采场区域的通风阻力及通风等势图.The design of spring is the critical factor to the feature of isobar filling valve.弹簧设计对于等压灌装阀的性能起...
He makes decorative vessels in copper, stainless steel and silver.他用铜、不锈钢和银制造装饰性器皿。The standard spec includes stainless steel holding tanks.标准配置里包含了不锈钢储液罐。a large stainless steel pan一只不锈钢大平锅...