neutral optical filter

同义词释义

1)neutral optical filter,烟度计物理反应时间2)physical response time of opacimeter,烟度计物理反应时间3)Smoke Intensity,烟度4)smoke,烟度5)smoke emission,烟度6)smoke density,烟度7)Smoke opacity,烟度8)Smoke opacity,消光烟度9)Smoke emission,烟度排放10)smoke meter,烟度计