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.