Helicobacter pylori is a spiral Gram's negative bacterium, living in microaerophilic environment.幽门杆菌是一只革兰氏阴性螺旋菌, 生活在微需氧的环境下.Excuse me the following bacterium of screw of which formulary and eradicative pylorus is b...
Since 1979 China has collected 24.7 billion yuan in pollutant discharge fees.1979年以来,全国共征收排污费247亿元.Knowledge of any given exposure to air pollutant mixtures is largely inadequate.关于任何特定的暴露于空气污染混合物中的知识,都是极为欠缺的.We will dis...
本小心翼翼地把车开进车库时从他们身边经过。Ben drove past them, nosing his car into the garage.“车在车库里吗？”——“不，还在外面。”"Was the car inside the garage?" — "No, it was still outside."他从车库的暗处走出来。He emerged from the dark recesses of the garage....
A group of apprentics were operating the hydraulic press.一群学徒正在开动水压机.The antiwear hydraulic oil had excellent lubricating, antioxidant, thermal stable properties.抗磨液压油具有突出的抗磨性,良好的润滑性 、 抗氧性和热安定性等特点.Hydraulic characteristi...