For example, when the cursor passes over a window's frame, the cursor changes to a double-ended arrow showing the axis in which the window edge can be stretched.
比如，当光标通过一个窗口的边框时。光标就会变成两端都是箭头的形状。
Numerical investigation of the effects of different leading-edge profiles on vortical flows over a double-delta wing;
计算模型包括尖前缘、菱形前缘、圆形前缘等三种不同前缘形状的机翼。
Numerical investigation of the effects of different leading-edge profiles on vortical flows over a double-delta wing;
计算模型包括尖前缘、菱形前缘、圆形前缘等三种不同前缘形状的机翼。
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