单词	Old Beijing Observatory
释义	Old Beijing Observatory 北京古观象台
随便看	closed-type double action crank press closed-type feed Closed type feed water heater closed-type feed water heater closed type forming closed type formula closed type fuel valve closed-type fuel valve closed type generator closed-type harbor closed type heater closed-type heater closed type single action crank press closed-type single action crank press closed type single point press closed-type slot closed type square closed type steam heating system closed type system closed type through cutting closed type thrust bearing closed type track circuit closed type valve closed ullage system closed ulnar shaft fracture