调查人员发现地下管道严重腐蚀。The inves-tigators found that the underground pipes were badly corroded.管道设备和电路按照高标准安装。Plumbing and electrics are installed to a high standard.村民用管道从水库引来饮用水。The villagers piped in drinking water from the r...
The volunteers kept a record of everything they ate for a week.志愿者记录下他们一周所吃的所有食物。Volunteers constitute more than 95% of The Center's work force.该中心95%以上的工作人员是志愿者.Twelve potential vaccines are currently being tested ...
钾质白云母是铅锌银矿床中的主要热液蚀变矿物,通常表现为白云母化、绢云母化、伊利石化.Potash micatization is one of the main hydrothermal alteration minerals genetically related to the lead - zinc - silver deposit.康山金矿田围岩蚀变主要为硅化 、 绢云母化、碳酸盐化及黄铁矿化.The main wall rock...
Nothing happens until the excitatory stimulus exceeds a certain'threshold'value.兴奋性刺激超过某一临界值以前毫无反应.Glutamate ( Glu ) is the main excitatory neurotransmitter in the central nervous system ( CNS ) .谷氨酸 ( Glu ) 是 ...