The nineteenth century witnessed a revolution in ship design and propulsion.19世纪船舶设计和船舶动力领域发生了重大的变革。Interest in jet propulsion was now growing at the Air Ministry.航空部对喷气推进的兴趣正在增加。The liquids employed for rocket propulsio...
flight vehicle propulsion system飞行器推进系统The nineteenth century witnessed a revolution in ship design and propulsion.19世纪船舶设计和船舶动力领域发生了重大的变革。...the submarine's propulsion system.潜水艇的推进系统Adduction of the upper arm to m...
Calcite is the dominant gangue mineral in the Furong tin polymetallic deposit.方解石是芙蓉锡矿田重要的脉石矿物.The kind of admixed coal gangue bas influence on the property of cement hydration.煤矸石种类对水化性能有影响.Coal gangue is the largest so...
Please don't trample on the azaleas.请勿踩踏杜鹃花。Don't trample on the grass.勿踏草地.Don't trample mud from your shoes on to the floor; I've just this minute swept it.不要把你鞋上的泥踩在地板上, 我刚刚才扫过地....
...a portly middle-aged man.一个胖胖的中年男人He wore a belted raincoat that accentuated his portly middle...他穿着一件系腰带的雨衣，使他发福的腰身更加显眼。How did he look, Sir? Was he portly, bold, outspoken, and hearty?他看来怎样, 先生? 他是不是又魁梧 、 又豪放 、 又直爽 ...
The OPPLC was conformed by differential scanning calorimetry ( DSC ).差热分析 ( DSC ) 的结果表明形成了OPPLC这一新的物相.She was nervous and kept scanning the crowd for Paul.她很紧张，眼睛不停地在人群中搜寻保罗。The thermal denaturation of chicken ovalbumin ...