As an example, the failure probability and design reliability of the valve chamber on Model YLB-1000 fracturing pump are analyzed, and the critical points are indicated.
以ylb—1000型压裂泵阀箱为例，计算了破坏概率和可靠性，并指出了危险点。
When the inclusion size in the spring steel is larger than the critical size of inclusions, the probability of fatigue failure will increase.
当弹簧钢中的夹杂物尺寸大于临界夹杂物尺寸时，容易造成疲劳强度失效。
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