taperoff(使)一头逐渐变细,(使)逐渐减小[停止],衰减,递减tapern.小蜡烛；蜡芯；尖锥形；渐弱v.逐渐变小；逐渐消失adj.尖细的；划分等级的taper freight rate分等级的运费,分等级运费tapered rigid pile楔形刚性桩tapered socket bit锥形联接钻头tapered connection锥形连接tapering lap joint尖塔接头taper-seat valve锥形座阀tapering operation肠管变细术tapering arch form尖形弓taper rolling mill变断面轧机taper screw thread锥螺纹