portal frame

• 1. 桥门架: portal frame
• 2. 桥门撑杆架: portal bracing
• 3. 活动式桥门台架: Gantry travelling

更多释义

• 1.像总泵、车轮、转向液压缸、微动阀、连杆、门架滚轮、转向桥等部位，只要靠紧固进行调整就能修理的故障。
  Failures which can be solved by minor adjustment on brake pump, wheel, steering hydraulic cylinder, and micro-valve, connect level, mast roller, steering axle, etc. are excluded.
  dict.yoduao.com

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