自じ由ゆう表ひょう面めんじゆうひょうめんMeanings1nounfree surfacechemistry›Technical term in chemistry and physics for a surface of a fluid that is not in contact with a solid boundary, such as the top surface of a liquid in an open container.液えき体たいの自じ由ゆう表ひょう面めんでは
