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- The lens has no internal AF motor and relies on a slotted drive screw operated by the camera. 该镜头没有内部马达，需要依靠机身的对焦马达驱动。
- Three strikes of the hammer drove the nail in the wood. 三锤子把钉子敲进了木头。
- The article presents the principle, basic structure, main features and strike characteristics of new double strike electric drive screw press. 介绍了双击式直接电动螺旋压力机的工作原理、基本结构、主要特点及其打击特性。
- According to the actual working condition of the electric motor on ground drive screw pump, two kinds of new motors are proposed, that is the gearshift multi-power single speed motor and speed regulating pole change motor. 摘要根据地面驱动螺杆泵电动机的实际工况，提出了分挡多功率单速和变极调速2种新的电动机设计方案。
- Newly developed electric heating hollow rod drive screw pump system adopts hollow sucker rod to drive the screw pump.It has twice the antitorque capacity of the hollow rod with the same cross section. 新研制的电加热空心抽油杆驱动螺杆泵装置采用空心杆驱动螺杆泵，抗扭承载能力比相同横截面积的实心杆增大近1倍。
- The hydraulic pressure is used to drive screw and piston.The nut displacement cooperates with the piston micro-displacement to clamp aluminum stick.Many aluminum sticks could be clamped together. 机构采用液压驱动,螺旋传动移位,螺母位移与活塞微动相配合夹紧,可同时夹持多根铝棒。
- The prestressed hammer driven piles aided by water jetting were used as the substructure of a wharf, and transverse cracks were observed in the bodies of the five test piles. 摘要某码头工程下部结构采用预应力水冲锤击桩，试桩过程中发现，在贯入度较大的情况下桩身多处产生横向裂缝，使桩尖无法达到设计标高。
- The motor driven screw mechanism pushes wet soybeans into the grinder.Feed can be adjusted by changing rpm of the motor. 由电机带动螺旋机构推动湿豆进入磨浆机中，通过调节电机转速调节湿豆供应量。
- galvanized mild steel drive screw 镀锌螺丝钉
- double-strike electric drive screw presses 双击式电动螺旋压力机
- A very nice set of glasses came under the hammer yesterday. 昨天拍卖了一套很精致的玻璃杯。
- The teacher has been trying to hammer in the facts. 教师一直设法把这些事实灌输给学生。
- In the light of the frequent breaking of the rod string in a surface driven screw pump well, the force condition of the string in the well is analyzed by means of the elastoplasticity theory. 针对井口驱动螺杆泵抽油杆柱断脱频繁的问题，应用弹塑性理论分析了抽油杆柱在井中的受力状况。
- The mason was chipping away at the rock with a hammer. 石匠用锤子一点一点地把那块石头击碎。
- I can't get this screw to come out of the wall. 我无法把这颗螺丝钉从墙上取出。
- The stability of instruments should lie enhanced by injecting bone caret into the screw holes and driving screw under terminal plate, and forming framed-structure with traverse rods in the operation. 结论胸椎椎弓根螺钉内固定是治疗胸椎骨折的一种有效方法，适用于老年骨质疏松症骨折患者，固定时螺钉应贴近终板下或钉孔注入骨水泥以增加螺钉的把持力，并通过横杆组成框架式结构增加椎弓根系统的强度。
- a hammer driven by compressed air. 用压缩空气驱动的钻。
- a hammer driven by electric motor. 用电发动机驱动的钻。
- The brackets want an extra screw. 托架需要再加一个螺钉。
- The hammer is missing from my toolbox. 我的工具箱里少了一把锤子。
