当两条直线相交所成的四个角中,有一个角是直角时,即两条直线互相垂直,其中一条直线叫做另一直线的垂线,交点叫垂足。 垂线段是一个图形,点到直线的距离是一个数量。
adj. vertical
misc. vertical line ; perpendicular line
顶垂线 [数] altitude
垂线偏差 deflection of the vertical ; deflection of plumb line ; vertical deviation
悬垂线夹 suspension clamp ; XGU ; CGJ ; XGF
公垂线 [数] common perpendicular ; common normal ; common vertical line
垂线偏差改正 correctionfordeflectionofthevertical ; deflection of the vertical correction
艉垂线 after perpendicular ; AP
艏垂线 fore perpendicular ; forward perpendicular
船首垂线 Fore Perpendicular ; [船] forward perpendicular
正垂线 normal line ; direct plumb line ; V-perpendicular line ; horizontal--profile line
让我们试着测量垂线间距。
在整个边线上再用铅笔工具画1px的垂线。
Add a little extra touch to the stroke by drawing a 1px line with the Pencil Tool vertically up the entire edge.
讨论了天文重力水准的误差及垂线偏差非线性影响等问题。
Futhermore problems of the error of astro gravimetric leveling and the nonlinear influence are discussed.
If I draw this down this this point is this year's income down here and this point here is next year's income; I'll use Y for income.
过这点画一条x轴的垂线,表示今年的收入,再画一条y轴的垂线,表示下一年的收入,我用y表示收入
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