“桅杆起重机”的概念、定义、翻译、参考文献-科学参考

单词	桅杆起重机
释义	桅杆起重机 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	thread process machine thread scheduling thread sewing Threads Society thread whirling thready pulse threat threat analysis threat assessment threatened abortion threatened animals in China threatened plant threatened preterm labor threatened species threat estimation threat identification threat monitoring threat of coalitions threats to biodiversity threat strategy Three three accesses & two platforms three affliction Three-Age System Three Antis Movement and Five Antis Movement

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。