noun
law of conservation of mass
Scientific term used in physics and chemistry. States that mass is neither created nor destroyed in a closed system.
化学反応では、質量保存の法則が成り立つ。
In chemical reactions, the law of conservation of mass holds true.
Compound of 質量 (mass), 保存 (conservation), and 法則 (law). A direct translation of the Western scientific term.