To provide the molecular formula and molecular weight, as the substance has a unique and defined molecular structure according to item III of your notification form.

根据申报表项填写情况，申报物质有唯一确定的分子结构，所以应准确填写申报物质的分子式和分子量。

youdao

Gives a formula for calculation of crude oil molecular weight and compares the results calculated from crude oil samples.

给出了一个原油分子量计算公式，并对原油样品的计算结果进行了比较。

youdao