1·Hull floors being fitted and checked for alignment with a centreline plumb line.
赫尔楼正在安装和检查调整，以中心线铅垂线。
2·Each morning she would arrange her tools carefully, her chisel, her hammer, her mallet, her tape measure, her plumb line, and then she would look over the stones that she had to work with that day.
每天早晨，她会仔细地摆放她的工具，凿子、锤子、木槌、卷尺、铅垂线，然后察看这一天需要雕琢的石头。
网络释义
铅垂线
电梯专业英语词汇（四） ... plumb bob 铅垂重物，铅垂 plumb line铅垂线 plunger 柱塞，插棒铁芯 ...