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- We can adjust the levelness of the machine by means of shim and screw jack. 我们可以利用垫铁和螺丝千斤顶来调整机器的水平度。
- Bearing and power driven equipment. 轴承及动力传动装备;
- The lifting capacity of this chain hoist (hydraulic jack, screw jack) is 5 ton. 这个吊链(油压千斤顶;螺旋千斤顶)的起重能力为5吨.
- The lifting capacity of this chain hoist (hydraulic jack, screw jack) is 5tons. 这个吊链（油压千斤顶、螺旋千斤顶）的起重能力为5吨。
- Each of the four legs contains a simple screw jack with a thrust bearing that is operated telescopically inside of two tubes. 四条腿中每个都装有一个简单的螺旋千斤顶，千斤顶中又有一个在两根管道中做伸缩操作的推力轴承。
- Larger power driven craft should be given a wide berth by small sail craft. 大飞机应该与小飞机保持一定距离。
- 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。
- 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。
- Prompted by Mammy's hoarse whisper, Jack set his fly-brush in the corner and removed the dishes, while Mammy fumbled in the sideboard drawer for Ellen's worn prayer book. 嬷嬷用沙破的嗓音低声吩咐了一句，杰克便将驱蝇帚放在屋角里，动手收拾桌上的杯盘，嬷嬷也到碗柜抽屉里去摸爱伦那本破旧的《祈祷书》。
- When he loses contact with his wife, Jack sets out to find her. 当杰克与泰瑞失去了联络后，他向办公室外出发，准备去找她。
- 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。
- AUTOGYRO :A rotorcraft the wings of which are not provided with any form of direct power drive. 自动迴转仪：一种旋翼航空器，其机翼不提供任何形式的直接动力驱动。
- AUTOGYRO : A rotorcraft the wings of which are not provided with any form of direct power drive. 自动迴转仪：一种旋翼飞机，其机翼不提供任何形式的直接动力驱动。
- 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。
- Post and tele-communication,mine enterprises,schools,railway,hospital,research,institution anywhere required power to assure the normal operation of power driven equipents. 广泛用于邮电、工矿企业、学校、铁路、医院、印刷、科研等所有需要电压正常的场合，和部分供电设备及重要设备配套。
- HELICOPTER :A rotorcraft with a power driven rotor system whose axis (axes) is (are) fixed and substantially perpendicular to the longitudinal axis of the rotorcraft. 直升机：一种旋翼机，具备动力驱动旋转翼系统，其轴固定并大幅垂直于旋翼机的纵向轴。
- Design and Calculation of Screw Jack 螺旋千斤顶的设计计算
- The lust for money and power drives quite a number of people to commit crimes. 对金钱和权利的欲望使相当一些人走上犯罪的道路。
- Jack sets up a conference call with Chris and Emily. They discuss their latest project over the phone. 杰克安排了克里斯和爱密莉进行一次电话会议。他们要在电话里讨论他们的新计划。
- 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。
