单词	photo echo
释义	photo echo [网络] 光子回波
随便看	disk type pinion cutter disk-type pinion cutter disk type pneumatic frictional clutch disk type reamer disk-type reamer disk type rectifier disk-type rectifier disk-type reducing valve disk type reducing valve disk type relay disk-type retarder disk type root cutter disk type rotor disk-type steam trap disk type store disk type support disk type thermistor disk-type vibration mode disk type watermeter disk type wave generator disk-type wave generator disk type work disk unit disk unit (disk drive) disk unit supply 351112135 351112152 351112154 351112154 351112211 351112212 351112215 351112234 351112244 351112245 18245 18246 18247 18248 18249 18250 18251 18252 18253 18254