zhìliàngshǒuhéng dìnglǜ

== Mandarin == === Romanization === zhìliàngshǒuhéng dìnglǜ (Zhuyin ㄓˋ ㄌㄧㄤˋ ㄕㄡˇ ㄏㄥˊ ㄉㄧㄥˋ ㄌㄩˋ) Hanyu Pinyin reading of 質量守恆定律 / 质量守恒定律