leakage detector 基本例句 接地指示器 Laser imaging technology is an important breakthrough for SF6 leakage detection, but feasible verification method was not in hand for this on-line leakage detector in domestic. 红外激光成像技术在六氟化硫检漏方面实现重大突破，但是国内这种在线检漏仪器一直没有可行的校验方法。 dictall