单动作型执行机构 For single acting actuator
单动执行机构
Single acting actuator
以上为机器翻译结果，长、整句建议使用 人工翻译 。
空气或燃气缸体执行机构包括单动或双动，由机械弹簧或气动力实现故障开启或关闭等各种类型。
Air or gas cylinder actuators include single or double acting, fail open or closed by mechanical spring or pneumatic force. They can be manufactured to accommodate any length stroke.
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模块上移
模块下移
不移动