John Doe died in his bath, asphyxiated by the fumes from a gas water-heater.一名男子死于浴室中，死因是吸入燃气热水器中排出的气体导致窒息。Some appliances, for example a water heater, are connected to the full 240 V.有些用电设备(如煮水器)联接在240伏上.The company cam...
A down - hole autotracking well pumping unit different from the conventional pumping unit was designed.针对抽油技术的现状和存在的问题,设计了一种不同于有杆抽油方法的井下自动跟踪式抽油装置.It is autumn and they are pumping water out of the swimming pool.入秋了, 他们正在...
Slow, careful curing of the concrete improves the hydration of the cement.混凝土的缓慢而精心的养护可以改善水泥的水化作用.ZL and lignosulphonate calcium don't harm the strength development of granular soil stabilized with cement.ZL和木钙两种缓凝剂...