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三位结构的气缸是多位气缸的一种。它是在普通气缸结构的基础上进行改装的一种气动装置。它的特点是活塞环与活塞杆之间可产生一个相对运动,活塞在常压作用下,可以得到一个中间位置。其结构见图1。
Three-cylinder structure is a multi-cylinder. It is based on the general structure of the cylinder to be modified a pneumatic device. It is characterized by a relative movement between the piston ring and the piston rod, the piston at atmospheric pressure, you can get a middle position. The structure shown in Figure 1.