在第二章中我们首先定义了左拟对偶双边模。
通过对左座椅调整器的成形性工艺分析，提出了采用两套复合模结构的方法，并介绍了模具的具体结构及模具工作过程。
Through the analysis of forming technology of regulator of left chair, the method of using two sets of compound die is put forward.
她说：“图坦卡蒙木乃伊的左脸颊也有一个伤痕，其部位与卡纳文勋爵被蜇咬的地方一模一样。”
She says: "There was a bar on Tutankhamun's left cheek, where in exactly the same place where Lord Carnarvon was bitten."
通过对左座椅调整器的成形性工艺分析，提出了采用两套复合模结构的方法，并介绍了模具的具体结构及模具工作过程。
Through the analysis of forming technology of regulator of left chair, the method of using two sets of compound die is put forward. The specific die structure and its work pro - cess are introduced.
本文引入直投射覆盖的概念，证明了环R为左完全环当且仅当每一个左R-模（平坦左R-模）具有直投射覆盖；
This peper introduces the concept of direct-projective covers, and prove that a ring R is left perfect if and only if every left R-module(flat left R-module) has a direct-projective cover;
构造出了区间值三角模左连续与保任意并不等价的一个严格的反例；
A strict counter-example showing that left-continuity and union-preserving are not equivalent for interval-valued triangular norms is constructed.
证明了区间值三角模左连续的充要条件是保递增并，右连续的充要条件是保递减交。
It is proved that a triangular norm is left-continuous if and only if is increasing union-preserving, and is right-continuous if and only if is decreasing intersection-preserving.
证明了区间值三角模左连续的充要条件是保递增并，右连续的充要条件是保递减交。
It is proved that a triangular norm is left-continuous if and only if is increasing union-preserving, and is right-continuous if and only if is decreasing intersection-preserving.
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