化学中组合量单位词头的确定

Using on Prefix of Compositive Quantity Unit in Chemistry

对法定量单位的组合单位——分子和分母不同时加词头的表示规则提出了异议．指出在不失去量单位所表示的原含义前提下，分子和分母不可同时加词头，或分子带词头而分母则不带词头．反之。

There is only numerator prefix and no denominator prefix in the showing of compositive quantity unit without losing the self meaning of the showing. Conversely, denominator prefix cann't be eliminated in the showing of compositive quantity unit.