那么我就能名正言顺地,用R上的某个函数的二重积分来替代通量的线积分。

Then I can actually -- --replace the line integral for flux by a double integral over R of some function.

youdao

然后缓慢顺墙滑身而下，而腰部向前落——就像是松紧线牵动的木偶。

Then slowly slide down the wall, falling forward from the waist—like a marionette with slack strings.

youdao

各楼层窗框安装时均应横向、竖向拉通线，最好斜拉下对角线，主要就是开启扇窗口做到水平一致，上下顺直，准确无误。

A, each floor window installation shall be horizontal, vertical pull line, the best oblique pulling diagonal, mainly is the opening window to do on the same level, straight, accurate.

youdao