单词	cavity filling
释义	cavity filling 窝洞充填
随便看	Once the order is given, who dares to disobey Once there lived an old fisherman near the sea Once there was a cowboy Once the time is ripe… Once the voyage comes to an end once-though boiler once-thriving once-thrivings oncethrough once through once-through oncethroughboiler oncethrough boiler once through boiler once-through boiler Once-through boiler once-through boiler automatic control system once-through boiler unit once through bolier once-through circulation once-through condenser cooling once through conversion once-through conversion once through coolant system once-through coolant system