五百磅四分之一吨；五百磅。用作谷物计量单位 One fourth of a ton; 500 pounds. Used as a measure of grain.
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 An equivalent unit of composition measurement used in determining the dimensions of lines, illustrations, or printed pages.
按重量按照重量而不是容积或其它计量法 According to weight rather than volume or other measure.
压力；压强统一作用于物体表面的力量，用每一单位面积上的压力计量 Force applied uniformly over a surface, measured as force per unit of area.
