I heard the tramp of the marching soldiers.我听见了行军士兵重重的脚步声.They've had their marching orders.他们已经收到了辞退的通知。This is the unsounded purple sea of marching billows.这是个浪涛滚滚的不安宁的华美的大海.The gallant John B. Gordon, at head of ...
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...
It plays an physiological function in antifungi, antitumorigenesis , anti - oxidation, improving immunity, reducing lipemia, detoxification, etc.它具有抗菌 、 抗肿瘤 、 抗氧化 、 提高免疫力 、 降血脂和解毒等生理功能....