Vaca巴卡vacabbr.休假(=vacation)abbr.真空吸尘器(=vacuum)vacuolate cell空泡细胞Vacccinium ssp越桔Vaccinium L.[医] 乌饭树属，越桔属Vacnum booster真空助力器VAC phosphamide长春新碱-放线菌素D环磷酰胺vaccinal areola接种红晕Vaclav Psenicka普谢尼奇卡vacuity of mind心灵的空虚vaccinum pestis鼠疫菌苗Vaccinium ashei兔眼蓝莓

1. She has got a vaccum cleaner,but doesn't know what to do with it.
   她有一架真空吸尘器，却不知道怎样利用。
2. A new disc clicker is designed to repair the crutch of the vaccum electric stove used for synthetic diamond catalysts.
   为解决生产触媒用的真空电炉拐臂的修复而设计了花盘夹具，解决了修复电炉拐臂的问题，还可用来加工其它形状复杂的类似零件。