“portal crane”的概念、定义、翻译、参考文献-科学参考

单词	portal crane
释义	portal crane Encyclopedia 工学〔轻小型起重设备〕释 portal crane门座起重机安装在沿地面轨道行走的门形底座上的全回转臂架型起重机，其门形底座下方可通行铁路车辆或其他无轨运输车辆（如汽车）等。
随便看	biinvariant measure biinvariant metric Bijan Bhattacharya bijection bijective bijective function bijective homomorphism bijective mapping bijective measure preserving transformation bijective measure-preserving transformation bijective proof bijectivity Bijiang Qu Bi Jichu Bijie Museum Bijie Science and Technology Museum Bijie Shi Biji House Rambling Story Bikaner Bikash Bhattacharjee Bi Ke bike trial Bikini Atoll Bikini Radioactive Contamination Event Bikini radioactive contamination event

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