unit mole造句

例句与造句

1. The National Institute of Standards and Technology of the United States prefers the term "'amount-of-substance fraction "'over mole fraction because it does not contain the name of the unit mole.
2. Different elements have a different atomic mass, and as collections of single atoms, molecules have a definite molar mass, measured with the unit mole ( 6.02 ?10 23 individual molecules, Avogadro's constant ).
3. It's difficult to find unit mole in a sentence. 用unit mole造句挺难的