first cut粗錾纹,粗切削,掏深槽
firstadj.第一的;最初的adv.首先;第一n.最初;(序数词)第一
first- level pipeline network一级管网
first carpo-metacarpal Joints第一腕掌关节
first-order dispersive filter第一阶波散滤波器
first impressions are strongest先入为主
first order difference equation一阶差分方程
first price sealed bid auctions第一价格密封拍卖
first order phase-locked loop一阶锁相环
First floor washroom of blue.蓝色的一楼盥洗室。