分析了滚珠丝杠副的原理及结构形式.The rule and the composition of the ball screws were analyzed.给出四方向等载荷型哥德式沟槽直线滚动导轨副的装配关系.Assembly has a great influence on the quality of high precise linear motion rolling guide.在球面连杆机构中, 所有的转动副的轴必在一点上相...
Crystals having this property are said to be doubly refracting , or birefringent.具有这种性质的晶体叫做双折射晶体.In pregnancy a high fibre diet is doubly important...在孕期,含高纤维素的饮食越发地重要。She now felt doubly guilty; she had embarrassed Fra...
他摆出一副挑衅的架势,但只是虚张声势.He behaved aggressively out of bravado.法老成了到处挑衅的征服者.The Pharaohs became aggressive conquerors.他要求暂缓采取行动,等对方挑衅的情况更明朗时再说.He urged delay to a moment when the provocation would be clearer....
The factory produces propellant for ballistic missiles.这个工厂为弹道导弹生产推进剂。China regrets the abrogation of the Anti - Ballistic Missile Treaty.中国对《 反 弹道导弹条约》失效感到遗憾.an intercontinental ballistic missile洲际弹道导弹The payload of a b...