真空吸尘器靠抽吸除尘。Vacuum cleaners work by suction.行车气流抽吸管的曲轴箱开口通常是很好地遮挡着的.The crankcase opening for the roaddraft tube was usually well shielded.抽吸式干湿球温度计能够破坏细微的水分平衡.An aspiration psychrometer could destroy a delicate moisture ...
I'm afraid tidiness is not his strong point , ie he is untidy.我看他这个人不大讲究整洁.Tidiness in the workshop is really essential for producing good work...工作间干净整洁对于生产出好的产品非常重要。Employees are expected to maintain a high standa...
Objective To study the distribution of the chromatic value of gingival porcelains.目的了解临床常用牙龈瓷的颜色参数....decorative 17th and 18th century porcelains.17和18世纪装饰用的瓷器All the porcelains produced in Jingde Town are fine works of ...