A kind of new transmission - the planetary ringy gear transmission is introduced.
提出了一种适用于无游梁抽油机的新型传动机构 - 行星齿环传动.
互联网
The semi freedom short circuit is superposed by parallel plane flow, confluence and ringy turbulence jet.
半自由状态下的短路流场是平行平面流 、 环形紊流射流及汇流叠加而成.
互联网