The design of reamer, which is made to machining the basic hole of tapered thread hole on the seamless steel resolvable ethine gas-jar, is introduced.是什么意思_The design of reamer, which is made to machining the basic hole of tapered thread hole on the seamless steel resolvable ethine gas-jar, is introduced.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句