composition measurement

• 成分测量

composition measurement的用法和样例：

例句

1. An equivalent unit of composition measurement used in determining the dimensions of lines, illustrations, or printed pages.
   12点活字的字行长度排版计量的等义单位，相当于12点活字长度，用来确定行与行之间、插图与插图之间或打印页之间的距离