那个潜艇艇长有个类似于潜望镜之类的东西.The captain of the submarine has got this periscope thing.这只艇以3艇长之差得胜.The boat won by three lengths.艇长催促航信士官给他识别手册.The captain harried the quarter master for recognition manuals....
The degree of carbonization of coal depends on the temperature.煤层的炭化程度取决于温度.It was discussed that the technique of carbonization using limekiln gas and water glass.探讨了利用工业废弃物石灰窑气和水玻璃,采用碳化法制备白炭黑的工艺过程.Pyrolysis section: bu...