单向和双向推力角接触球轴承（图1.50和1.51）都用机床主轴轴向刚性作为指导。
Single-direction and double-direction angular contact thrust ball bearings (Figures 1.50 and 1.51) are used for machine tool spindles requiring rigid axial guidance.
用光耦和双向晶闸管控制接触器和电磁阀。
The contact and the gas valve are controlled by phototriac and triac.
要切换到压缩机，可以通过电流接触器开关，继电器或者双向可控硅来控制电流盒或者电路板。
Control electric box or circuit board with contactor, relay, or triac that switches to the compressor.
DB组合，DF组合及四点接触、双列角接触球轴承可承受径向和双向轴向负荷。
DB combinations, DF combinations and four-point contact, double row angular contact ball bearings can withstand radial and bi-axial load.
提出一种非接触电能双向推送模式，用于完成电能发射端与接收端的双向直接转换。
A novel contactless energy bi-directional push mode was developed to realize direct conversion between energy transmitter and receiver.
模底接触区与自由变形区交界处的大塑性变形区依次处于板料曲面内双向伸长变形和平面应变状态；
The zone between the region contacted with bottom of the mould and the free forming region shows stretch forming and then transferred to plane strain state.
FST生产的推力球轴承以单向推力球轴承为主，同时还生产双向推力球轴承及双向推力角接触球轴承。
FST production to one-way thrust ball bearings thrust ball bearings mainly, but also the production of two-way thrust ball bearings and two-way thrust angular contact ball bearings.
四点接触球轴承为可分离型轴承，可承受双向轴向载荷，并有单列和双列角接触球轴承的功能。
Four pionts Angle contact ball bearing is separable bearing, it can be subject to bi-directional load and have the function of both single row and double rows bearings.
四点接触球轴承为可分离型轴承，可承受双向轴向载荷，并有单列和双列角接触球轴承的功能。
Four pionts Angle contact ball bearing is separable bearing, it can be subject to bi-directional load and have the function of both single row and double rows bearings.
应用推荐