boom foot pin 动臂座架销
boom swing lock pin 动臂回转止动销
boom cylinder support pin 动臂油缸支承销
boom pivot pin 动臂枢轴销
boom cylinder pin 动臂油缸销
boom mounting pin 动臂悬装销
boom foot pin assembly 动臂座架销总成
height of boom foot pin [机] 动臂枢轴高度
boom cylinder mounting pin 动臂油缸固定销
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