短語詞組短語open water surface 開闊水面open grate surface 爐排通流截面open Riemann surface 開黎曼面Open flat surface 開放平面open -surface cooling 開式冷卻open surface condenser 開敞表面冷凝器open surface degassing 表面除氣open surface method 明挖法open condition of surface 可透水的表面條件 返回 open surface