這樣就產(chǎn)生了目前各種船舶上普遍應(yīng)用的回聲探測儀.So was born the echo - sounding apparatus, now in general use in ships.大多數(shù)共振質(zhì)量探測儀是由巨大的圓柱形鋁棒構(gòu)成.Most resonant mass detectors are made of large, cylindrical aluminum bars.建造共振質(zhì)量探測儀不像建造激光干涉計探測儀那么昂貴.Re...