短語詞組短語elevator bottom shaft 電梯井elevator r shaft 升降機(jī)井elevator bottom shaft bush 升降機(jī)軸襯elevator r shaft gates 升降機(jī)井門elevator shaft gates 升降機(jī)井門blank elevator shaft 分級(jí)電梯井Boiler elevator shaft 鍋爐電梯槽;鍋爐電梯井main elevator shaft 提升機(jī)主軸Boiler steel elevator shaft 鍋爐電梯井鋼結(jié)構(gòu) 返回 elevator shaft