英文: 25 Pounders and mortar emplacements get supercharged shell
propellant bags for vastly increased weapon range.
英文: A 3-D viscosity turbulence model is used to analyze the unsteady around flow field of the thrust-vectoring engine of the jet vane, and results of the area including vane base, vane flake and motor shell
中文: 摘要以推力矢量发动机的燃气舵为研究对象，采用三维、粘性、湍流流动模型和数值分析的接触网格技术，在定常流动计算的基础上，对包含舵基、舵片和发动机壳体的区域进行详细数值分析。 更详细...
英文: A coconut shell
full of water is an ocean to an ant.
中文: 灌满水的椰子壳对蚂蚁是一个海洋。 更详细...
英文: “Andrew has certainly come out of his shell
since he learned to swim and became a lifeguard.
中文: “自从安德鲁学会了游泳，成为救生员后，他的确不再羞怯了。” 更详细...
英文: “Yes, sir,” said one of the boys, “But it would be more wonderful if we knew that how a chick gets into its eggshell
中文: “是的，老师，”一个男学生说，“可是，如果我们知道它是怎样事先钻进蛋壳里的那就是更奇妙了。 更详细...