“tower crane”的概念、定义、翻译、参考文献-科学参考

单词	tower crane
释义	tower crane Encyclopedia 工学塔式起重机释 tower crane塔式起重机机身很高，有的可以在轨道上移动，工作面较大，主要用于建筑工程的起重机械。工学〔轻小型起重设备〕释 tower crane塔式起重机臂架安装在垂直塔身顶部的全回转臂架型起重机。
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