在进行了血常规检查后，她发现她处在缺少铁元素和维生素b12的边缘，这一点有助于解释她的疲劳。
After some routine blood tests, she found out that she's borderline deficient in both iron and B12, which helps explains her exhaustion.
研究了有机玻璃边缘连接元件在不同温度下的拉伸和弯曲疲劳特性。
Tension and bending fatigue tests were carried out to investigate the fatigue behavior of polymethylmethacrylate for edge attachment element at different temperatures.
综合分析了阀片的失效原因、机理，并进行了对阀片边缘实施滚磨倒角来提高其疲劳寿命的实验研究。
The cause and mechanism of valve failure are analyzed, and the method of tumbling chamfer is studied to improve service life of the valves.
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