So I'm looking at all points to satisfy 2 X minus Y equal 0. And I'm often... it's often good to start with which point on the horizontal line, on this horizontal line Y is 0.
找寻所有的点满足2X-Y=0.最好从横坐标上的点为起始，横坐标也就是Y=0。
With the optimal project, the defects of Y-type seal-ring were eliminated. As a result, the Y-type seal-ring can satisfy the seal requirement of hydraulic prop with water medium.
依据最优方案成型的Y型密封圈其缺陷得以消除，符合水介质单体液压支柱对密封元件的要求。
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