词汇	ball surface
释义	ball surface 圆球面
随便看	by product byproduct of desulphurization by product of government operation byproduct of manufacturing bean curd byproduct of oil processing byproduct of production PVA by-product of research work by-product of vegetable oil byproduct oven by product oven by-product oven by-product phosphate by product plant by-product plant byproduct power by-product power byproduct precipitation by product precipitation by-product precipitation by product production by-product production by-product by product accounting methods by-product acid desorption process by product aggregate