单词	对旋式风扇
释义	对旋式风扇contra-rotating fan
随便看	marine geoscience marine geotechnical test marine geotechnique marine geotechnology marine gis database marine glue marine gravimeter marine gravimetric survey marine gravimetry marine gravity anomaly marine gravity survey marine growth marine growth preventing system marine growth preventing system {=mgps} marine guidance marine heat flow survey marine heavy metal pollution marine hospital marine hotel marine hull insurance marine humus marine hydrography marine hydrological chart marine hydrology marine hydropneumatic components and units