zhìliàng shǒuhéng

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