zhíliàngshǒuhéng dìnglǜ

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