鱼眼：没有已知用途，除了在摄影教科书中演示效果。
Fisheye: no known USES, except to illustrate fisheye effects in photo how-to books.
“问题提的更快，气氛更加活跃”所有这些都带来更好的演示效果。
"The questions come faster, and the tone is livelier." All of which results in a better presentation.
为工程技术人员掌握缠绕原理及工艺过程提供良好的演示效果。
Supply good effect for technical personnel master principle and technological process of winding.
应用推荐