泵的置有吸入阀和排出阀、泵缸、缸套和拉杆的一侧。
The side of a pump where the suction and discharge valves, pump cylinders, liners, and rods are located.
输出轴转动时，会向一侧拉动拉杆，使得转向节绕其支点旋转。
When the shaft turns, it pulls the linkage to one side and makes the steering knuckles turn slightly about their pivot points.
腰侧的拉杆，配上大小适中的腿架，提供产妇最佳的着力点，从而使生产更顺利，更少痛苦。
Sidewaist the tension bar, coupled with the modest size of legs planes, to provide the best maternal focus, making production more smoothly and less painful.
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