zhíliàng shǒuhéng

== Mandarin == === Romanization === zhíliàng shǒuhéng (Zhuyin ㄓˊ ㄌㄧㄤˋ ㄕㄡˇ ㄏㄥˊ) Hanyu Pinyin reading of 質量守恆 / 质量守恒