“derrick crane”的概念、定义、翻译、参考文献-科学参考

单词	derrick crane
释义	derrick crane Encyclopedia 工学〔轻小型起重设备〕释 derrick crane桅杆起重机以桅杆为承载构件，臂架下端与桅杆下部铰接，上端通过钢丝绳与桅杆相连的简易臂架型起重机。俗称把杆、拔杆。
随便看	normal trace normal tracial weight normal transformation normal triangular matrix normal ultrafilter normal union normal valuation normal value normal variate normal variety normal vector normal vector bundle normal vector field normal velocity normal vibration normal weather radar normal web normal wedge normal weight normal Zeeman effect normal zero-dimensional cycle Norma May Norman Norman Bel Geddes Norman Conquest

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