1) touchline
[英]['tʌtʃlaɪn] [美]['tʌtʃ'laɪn]
边线界线
2) boundary
[英]['baʊndri] [美]['baundrɪ]
界线 边线
3) boundary line
界(线);边界
4) borderline curve
边界线曲线
5) boundary line
边界线
1.
This paper is concerned about two common problems of the square of plane figure and double integral,constructs two different kinds of system of inequalities by skifully using the boundary line,and chooses integration variables and the order of repeated integral quickly and truly on the base of the shape of figures and integrands.
本文针对平面图形面积和二重积分两个常见问题,巧用四条边界线建立两种不同形式的不等式组,同时结合图形形状和被积函数,快速而正确地选择积分变量和累次积分次序,简化了计算,提高了运算能力和解题速度。
6) limiting hold-line
边界折线
补充资料：界线
界线
①相交区域的分界线。②组织器官占据的范围，如心界、肝界等。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条