学习其关键概念和布局设计的一些命令，你将很快被信心和知识武装起来，并很容易的将你的店铺外观修改成为你想得到的风格。

By learning some key concepts and commands of layout, you will soon be armed with the confidence and knowledge to easily modify your store design to your desired spec.

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编制了凸轮升程曲线计算程序，对发动机的配气机构进行了重新设计，确定将配气凸轮修改成为FB2型，使得发动机性能得到进一步优化。

Calculation program of CAM lift curve is worked out. Valve train of engine is redesigned, and CAM is amended to FB2 type. Then, performance of engine is optimized further.

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