| 释义 |
〔caliber〕The diameter of the bore of a firearm, usually shown in hundredths or thousandths of an inch and expressed in writing or print in terms of a decimal fraction:口径：火器枪孔的直径，常以英寸的百分数或千分数表示，在手写或印刷中常以十进制分数表示：〔cancel〕To remove (a common factor) from the numerator and denominator of a fractional expression.约分：从一个分数表达式的分子和分母去掉（一个公因子） |