单词	芙蓉球石
释义	同红色球状碧玉--芙蓉球石
随便看	natural control of voltage natural convection natural-convection natural convection air-cooled condenser natural-convection air cooler natural-convection boiling natural convection-cooled device natural convection cooling natural convection loop natural-convection recirculation natural-convection--recirculation natural convective heat transfer natural convector natural convolution natural cooled system natural cooling natural coordinates natural cosine natural count natural crimp natural crook natural crook-- natural crook timber--crook natural crook timber natural crossing natural crystal