单词	射线声学--几何声学
释义	几何声学；射线声学ray acoustics
随便看	time interval conversion time interval conversion--tic time interval conversion，tic time interval counter time-interval counter time interval counter，tic time interval discriminator time interval error time interval generator time interval indicator time interval measurement time interval measurement，tim time-interval mode time interval optimization time-interval radiosonde time interval spectrum time interval system time invariance time-invariance property time invariant time-invariant time invariant channel time-invariant channel time-invariant linear filter time invariant operation