精选优质文档-倾情为你奉上水利水电词汇床面形态 Bed form床沙质 (造床质 ) bed material load垂线观测坐标仪(垂线观测仪) coordinatograph for plummet observation垂线平均流速 mean velocity at a vertical垂直度 perpendicularity垂直度盘指标差(指标差,竖盘指标差) index error of vertical circle垂直升船机 vertical ship lift垂直收缩系数 vena-contracta coefficient垂直位移工作点 operative mark of vertical displacement垂直位移观测(沉陷观测,沉降观测) vertical displacement observation垂直位移基点 datum mark of vertical displacement磁法勘探 magnetic prospecting磁方位角 magnetic azimuth磁极 fieid pole磁子