check equation meaning in English

核对方程

After being improved , the gear surface contact fatigue strength obeys weibull distribution and stress obeys normal distribution , the gear bottom bend fatigue strength and stress obey logarithm normal distribution , according to the relation of average safe rate and reliability , then the gear strength reliability design and check equations can be deduced
将齿面接触疲劳强度按威布尔分布、应力按正态分布处理，将齿根弯曲疲劳强度和应力均按对数正态分布处理，再根据平均安全系数和可靠度之间的关系，推导出了齿轮强度可靠性设计和校核公式。
Another advantage , contrast to using convolutional codes or turbo codes , is its low complexity while maintain high ber performance because the check equations are used to terminate the both iterations . we develop the theoretical error free feedback bound for bpcm - id and predict the threshold for decder convergence using the extrinsic information ransfer chart ( exit )
利用非正则ldpc具有不同度的信息节点概率密度演化的差异,对高阶星座中具有较高级别的子信道提供额外的保护,可使迭代反馈判决时,星座子集拥有最大的无错反馈欧氏距离调和均值,从而改善系统的迭代收敛特性。