人为故障发生率
Incidence of human malfunctions
以上为机器翻译结果，长、整句建议使用 人工翻译 。
轴承是故障发生率比较高的部件，用简易诊断法难免会出现人为的判断误差。
The bearings are the parts with higher malfunction occurrence rate, and it is hard to avoid appearance of the man-made judgment errors to utilize the simple diagnosis method.
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