頂面cone tosurface: 圓錐形跟; 楦錐體頂面tosurface of the basement: 基底頂面tosurface porosity: 上表面氣孔(鑄孔)cone tosurface outline: 錐體頂面周線tosurface of piston ring: 活塞環(huán)上平面下載手機詞典可隨時隨地查詞查翻譯