sound powered telephone

航海及海运专业词汇英语翻译(S) ... sound power 声功率 sound powered telephone 声力电话 sound pressure level 声压级 ...

船舶专业英语词... ... solid floor,plate floor 实肋板 sound powered telephone 声力电话机 spacing of longitudinals 纵骨间距 ...

直角三角形_馆档网 ... "听音机,听测器"," sound locator" "声能对话机"," sound powered telephone" "声压"," sound pressure" ...