连接成一个整体并且可绕竖向支撑转动，就位后锁定。
Joined as one piece and rotatable to the vertical strut, locked to stop rotation after in position.
辊轧机包括至少两个辊子，辊子以可绕其纵向轴线旋转的方式安装。
The rolling mill comprises at least two rollers, mounted to rotate about the the longitudinal axes thereof.
负载和气缸可绕铰轴在一个平面内摆动，气缸长行程时，建议采用中间铰轴式。
The load and air cylinder can swing round the pin in a plan, if the stroke is long, adopt the intermediate fixed or movable trunnion type.
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