Multiplying a point on the curve by a number will produce another point on the curve, but it is very difficult to find what number was used, even if you know the original point and the result.

曲线上的一点乘以数量将产生另一个点在曲线上，但是很难找到什么号码，即使你知道原始点和结果。

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Second, is difficult for professionals to study from a practical point of view: such as design, produce, etc, which is substituted by the theoretical studies from the aesthetic;

从知识构成上来说，理论专业的学者难以从实践角度深入紫砂的设计、制作等环节进行论述，只能重点从理论层面进行研究；

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Second, is difficult for professionals to study from a practical point of view: such as design, produce, etc, which is substituted by the theoretical studies from the aesthetic;

从知识构成上来说，理论专业的学者难以从实践角度深入紫砂的设计、制作等环节进行论述，只能重点从理论层面进行研究；

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