“hoist portal frame”的概念、定义、翻译、参考文献-科学参考

单词	hoist portal frame
释义	hoist portal frame 龙门扒杆
随便看	short annealing furnace short anneal oven short arc short arc metal transfer short arc method short arc welding short arm short armed short-baseline system short beam short bearing of tooth short bills short block short-bodies short bole short bone short-boom loader short branch short branchlet short breath short-brittle short-brittleness short burst short cane pruning short card

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