1、正垂线
... 常态曲线，正规曲线 normal curve 正垂线，法线 normal line 过半斜图 normal oblique drawing ...
2、正规线路
... 正常长度 normal length 正规线路 normal line 正常负载 normal load ...
3、垂直线
垂直线 drop lines; lot perpendicular; normal line; perpendicular lines; plummet line; v lines; vertical line定直线 boning out .
normal expression line detail表情线
human normal cell line人正常细胞
normal data line正常数据行
normal stepwise line fluorescence正常阶跃线荧光
normal geodesic line[测] 正规测地线
normal depth line正常水深线
normal straight line correlation正态直线相关
Normal l line法线
normal trend line正常趋势线