In 2006, he underwent a carotid ultrasound test and transthoracic echocardiography, which showed, among other troubles, a malfunction of the mitral valve.
他于2006年进行了颈动脉超声和经胸超声心动图检查，检查结果显示，他的心脏还有其它问题，其中之一是二尖瓣功能障碍。
The early malfunction pattern is identified and the analysis of severity of early malfunction made through the test of early malfunction of the horizontal machining center.
通过卧式加工中心早期故障试验，找出其早期故障模式，进行早期故障严重度分析。
The paper studies the problem how to choose some testing points to test all the malfunction, which take the least testing time.
本文研究了如何选取一些测试点，使得这些测试点可以检测所有故障，而所需时间最少的问题。
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