relative molecularweight的用法和样例：
例句
- The structural formula, including relative and absolute stereochemistry, the molecular formula, and the relative molecular mass should be provided.
应当提供结构分子式，包括相对和绝对立体化学分子式，分子式，相对分子质量等。 - The conversion rate of the polymerization and the relative molecular weight of the roduct are determined by weight method and Ubbelodhe viscosimeter respectively.
分别用称重法和乌氏粘度计测定了反应的转化率和产物的相对分子质量。
