在科技书刊中,“含量”被当作量名称使用的情形频频可见,但细加推敲,却是问题多多。含量,不是物理量,其含义也很不确切。例如:在商品包装上,含量常指物质的质量或体积;在科技书刊中,含量包括了定量描述混合物组成的各种量,如质量分数、体积分数、质量浓度、摩尔分数等。不管什 In science and technology books and periodicals, the use of “content” as a volume name can be seen frequently, but a lot of scrutiny is a problem. Content, not physical, its meaning is also very imprecise. For example: in the packaging of goods, usually refers to the quality of the material or volume; in science and technology publications, the content includes a quantitative description of the composition of the mixture of various quantities, such as mass fraction, volume fraction, mass concentration, mole fraction. No matter what