1)decimal,[十进]小数2)Decimals,十进小数3)decimal number,十进小数4)decimal point,十进小数点5)decimal number system,十进小数制6)decimal of many places,多位十进小数7)periodical decimal fraction,循环十进小数8)repeating decimal,循环十进小数9)floating decimal,（计算机）浮动十进小数点10)decimal point alignment,十进小数点位置调节
用法例句
Decimals are Cominuity Propostition of Real Numbers;
