“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	solvable algorithmic problem solvable analytic group solvable by a Turing machine solvable by radicals solvable congruence solvable equation solvable extension solvable flow solvable group solvable group; soluble group solvable group variety solvable ideal solvable Lie algebra solvable Lie group solvable manifold solvable model solvable operator solvable problem solvable radical solvable ring solvable set solvable subalgebra solvable subgroup solvable subgroup series solvable subgroup system

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