单词	哈衞管
释义	同Haversian
随便看	differential barometer differentialbarometer differential bevel gear differentialbewegung differential binary phase shift keying differential binary phase shift keying{=dbpsk} differential birth rate differential block differential blood cell count differential blood count differential bomb differential bond differential bone differential booster differential brake differential bridge differential cage differential calculus differential calculus interference microscope differential calorimeter differential cam differential capacitance differential capacitance manometry differential capacitor differential capacity