Translate Meaning of "roughing pump" to Chinese Language

English
Chinese

roughing pump
前置真空泵

roughing pump Chinese dictionary, roughing pump translation Chinese, roughing pump in Chinese, roughing pump Chinese glossary, roughing pump translate Chinese, meaning of roughing pump in Chinese, roughing pump in Chinese language, roughing pump English to Chinese, roughing pump in Chinese sentences

Privacy policy English to Chinese Translation English Dictionary Online}