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1·The first class of methods is available for canonical product of sums form and the second one is available for arbitrary boolean expressions.

第一类方法适用于和之积范式，第二类方法适用于任意布尔表达式。

2·Modern examples, such as Alex the African grey parrot, which could count up to six and knew sums and differences, are seen by some as special cases or the product of conditioning.

较近的例子，比如能数到6，懂得和与差的非洲灰鹦鹉alex，它只不过是特殊条件或训练的结果。

3·This paper systematically sums up the reverse design theory of grippers on-off mechanism, applies it to develop the new product and the desired result has been achieved for.

本文系统总结了咬牙开闭机构的反求设计理论，并将其应用于实际的新产品开发中，取得了预期的设计效果。

4·This part sums up a theoretical model of leisure tourism product development, and constructs a system of international leisure tourism products in Wuxi.

第七部分总结了休闲旅游产品的开发模式，构建了无锡国际休闲旅游的产品体系。

5·The paper sums up the generation mechanism and shape of burr and its blights on the stability of product.

文章论述了零件毛利发生的机理、毛刺的形态及因毛刺的存在而引起的产品不稳定状态。