1.
Study on outer driving precision PZT linear step actuator
外驱动双向推力型压电步进精密驱动器研究
2.
The double direction angular contact thrust ball bearings are suitable for machine tool spindles , while the single are used to support ball screws .
双向推力角接触球轴承适用于机床主轴，单向推力角接触球轴承适用于丝杠支承。
3.
Improvement of measuring method of contact point groove diameter for double-direction thrust angular contact ball bearing
双向推力角接触球轴承接触点沟径尺寸测量方法的改进
4.
double-row single-direction thrust ball bearing
双排单向推力球轴承
5.
duplex ball bearing
成对双联向心推力球轴承
6.
The Developmental Path of Conditional Reasoning Ability:Unidirectional or Bidirectional?
条件推理能力的发展轨迹:“单向”还是“双向”?
7.
The Research on the Heading Control System of the Twin-pod Electric Ship Propulsion;
双吊舱船舶电力推进航向控制系统研究
8.
Positive mechanical thrust drives plug into body seats to ensure tight bi-directional line seal.
积极的机械推力驱动阀塞进入阀体阀座馁，确保紧密双向管路密封。
9.
Two-way Impetus and Strategic Choice of Sports Industry and Urban Competitiveness;
体育产业与城市竞争力的双向推动及其战略选择
10.
Measurement and Study on Screw Torque and Axial Thrust of Twin Screw Pulping Extruder
双螺杆磨浆机螺杆扭矩和轴向推力的测量与研究
11.
A push upward or ahead.
推举力向上或向前的推动力
12.
dual thrust rocket engine
双级推力火箭发动机
13.
The Hydrodynamic Capability Research on the Propulsive System of the Ship with Twin-propellers and Twin-rudders;
舰船双桨双舵推进系统的水动力研究
14.
hydraulically-driven transverse propeller
液压传动横向推力器
15.
jet thrust reverser
喷气发动机推力反向器
16.
Four point contract center-oriented thrust Ball bearing
四点接触向心推力轴承
17.
multi-row radical thrust ball bearing
多列向心推力球轴承
18.
single row angular contact ball bearing
单列向心推力球轴承