97. vacant a. 空的,未占用的98. vacuumn. 真空,真空吸塵器99. oral a. 口頭的,口述的,口的
相關詞條
+vacuum mug and vacuum
1 . 真空保溫杯與真空
vacuum mug and vacuum brazing furnace ., 真空保溫杯與真空釬焊爐.
+vacuum interrupter and vacuum
1 . 真空滅弧室和真空
China a vacuum interrupter and a vacuum switch the focus of equipment manufacturers , vacuum interrupter and vacuum circuit breakers for many years and sales of domestic home front .公司是我國真空滅弧室和真空開關設備的重點生產企業,真空滅弧室和真空斷路器產銷量連續多年居國內前列。
+vacuum technique and vacuum
1 . 真空技術和真空
practicality data of vacuum technique and vacuum heat treatment ., 真空技術和真空熱處理實用數據.