词汇	section swicth
释义	section swicth 分段开关
随便看	sound powered microphone sound-powered microphone sound-powered phone sound powered telephone sound-powered telephone sound powered telephone set sound-powered telephone set sound-powered telephone system sound power level sound power level measurement sound power measurement sound power of a source sound power reflection coefficient sound-power telephone sound power telphone set sound power transmission coefficient sound power value sound-powor level sound prediction Sound presentation rate sound pressure calibration sound pressure calibration method sound pressure compensation method sound pressure correction sound pressure difference