-
旋转下图左侧两条螺旋曲线，还有右侧的一条。
Revolve the 2 screw curves shown below (left), and the one selected below (right).
youdao
-
在螺旋波里，轨道则是逐渐弯曲，所以密度变大的区域是曲线状。
Then they shoot back down and wind through a 270-degree spiral.
youdao
-
在螺旋波里，轨道则是逐渐弯曲，所以密度变大的区域是曲线状。
Then they shoot back down and wind through a 270-degree spiral.
youdao