单词	号码构成
释义	同号码组成--号码构成
随便看	natural circular frequency natural circulation natural circulation boiler natural circulation evaporator natural circulation in reactor natural circulation line natural circulation reactor natural-circulation steam natural-circulation steam generator natural-circulation steam--generator natural classification natural classification of cost natural clays natural climate test natural coast natural coke natural colloid natural color natural colored natural-colored natural coloring matter natural color television natural colo(u)r natural colour natural-coloured