... ball joint 球形接头 ball joint compensator 球形补偿器 ball joint manipulator 球承机械手 ...
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Combined with medium pressure steam heat-supply engineering, the applicability of square compensator, ball compensator and rotary joint compensator is discussed.
结合某中压蒸汽供热工程，探讨了方形补偿器、球型补偿器、旋转补偿器的适用性。
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