?测音器    sound detector

?声纳定位仪    sound fixing and ranging (SOFAR)

?隔音构造    sound insulation construction

?隔音门    sound insulation door

?隔音材    sound insulation material

?测深锤    sound lead

?声位仪    sound level meter

?声纳[导航仪]    sound navigation and ranging (SONAR)

?声力电话    sound power telephone

?声压    sound pressure

?防音门    sound proof door

?音响信号    sound signal

?音速    sound velocity

?测深器    sounder

?测深    sounding

?共鸣板    sounding board

?测深图表    sounding diagram

?测深[铅]锤    sounding lead

?测深[锤]索    sounding line

?测深机    sounding machine

?测深管    sounding pipe

?测深杆    sounding rod

?测深标尺    sounding scale

?测深表    sounding table

?测深管    sounding tube

?防音材料    soundproof material

?涌点,源流(流体力学)    source

?原始程序(电算)    source program

?隔片,间隔物    spacer

?间距,间隔    spacing

?绝缘距离    spacing for insulation

?吊舵    spade rudder

?跨距,翼展,跨[数]    span

?双吊杆顶间牵索    span (or schooner, or boom head) guy

?玻璃纤维    span glass (or glass fiber)

?跨距点    span point

?[三桅船之]后纵帆    spanker

?后纵帆桁(帆船)    spanker boom

?后纵斜桁(帆船)    spanker gaff

?后桅纵帆桅    spanker mast

?扳手    spanner

?扳手制动器(吹泄旋塞)    spanner guard