A novel technique has been successfully developed to calibrate the ultra high vacuum(UHV) and extra high vacuum(XHV),which consists of XHV/UHV chambers,a flow separation and a gas supply.是什么意思_A novel technique has been successfully developed to calibrate the ultra high vacuum(UHV) and extra high vacuum(XHV),which consists of XHV/UHV chambers,a flow separation and a gas supply.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句