Busch Stand C05 Busch has launched a new F model of its R 5 rotary vane vacuum pump, which the company says is designed for continuous use in a range of applications.是什么意思_Busch Stand C05 Busch has launched a new F model of its R 5 rotary vane vacuum pump, which the company says is designed for continuous use in a range of applications.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句