单词	人马座b2(电波源)
释义	人马座B2(电波源)Sagittarius B2
随便看	mechanical gyroscope mechanical hand mechanical hardware system design mechanical hazard mechanical heart mechanical high fidelity mechanical hot-channel mechanical hot-channel factors mechanical housing mechanical-hydraulic control pressure regulator mechanical-hydraulic control pressure regulator{=mhc} mechanical hydraulic control system mechanical hydraulic drive system mechanical hydraulic governor mechanical-hydraulic governor mechanical hygrometer mechanical hysteresis mechanical hysteresis effect mechanical impact strength mechanical impedance mechanical implements mechanical impurities mechanical impurity mechanical indication mechanical injection