A process for acid lead free tin - bismuth alloy electrodeposition was advanced.提出了一种酸性锡铋合金电沉积工艺.The high quality No.1 negative pole copper is produced by leaching - extraction - electrodeposition method.采用浸出 - 萃取 - 电积工艺...
Breslow wondered if he could be able to climb over the rail.布雷斯洛不知道是否能爬过栏杆.I could feel blood draining from my face. I wondered whether I was about to black out...我能感觉到血从我脸上流下来。我想我是不是要晕过去了。He wondered whether he were har...
Yoga can be used to strengthen the immune system.瑜伽能增强人体免疫系统。The immune system is our main defence against disease.人体的免疫系统是抵御疾病的主要屏障。Stress can wreak havoc on the immune system.压力可能会破坏免疫系统。...