“luffing jib tower crane”的概念、定义、翻译、参考文献-科学参考

单词	luffing jib tower crane
释义	luffing jib tower crane Encyclopedia 工学塔式起重机释 luffing jib tower crane动臂式塔式起重机通过起重臂的俯仰运动实现幅度变化的塔式起重机。又称动臂式塔机。
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