单词	灰塵計數器
释义	灰塵計數器1. duster counter
随便看	direct force control direct foreign investment direct form fir direct fracture direct free kick direct freezing direct freezing desalination direct frequency modulation direct frequency synthesizer direct fuel cells direct gain glazing system direct gap semiconductor direct-gap semiconductor direct gas-cooling direct gate direct-geared direct genetic continuity direct (geodetic) problem direct geodetic problem direct glare direct grant direct grant school direct-grant school directgrant school direct grant system