If you are unsure of how to use any apparatus or how to operate, ask your teacher for help.
如果你不确定如何使用仪器或操作，请向老师寻求帮助。
Photograph in just as the love, even your apparatus advancement, fine craftsmanship, but can't do without the darkroom to operate finally.
恋爱就像摄影，即使你设备先进、技术精湛，但最后还是少不了暗室操作。
The vacuum comparison standard apparatus is a secondary vacuum standard which is simple in structure, easy to operate, efficient in calibration and very practical.
比对法真空计量标准装置是一种结构简单、操作方便、检定效率高、实用性强的二等真空标准装置。
应用推荐