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《中国设备管理》杂志1989年第3期国家黄金管理局张佐卿同志文“关于浴盆曲线适用范围问题的探讨”中指出:“在技术进步和加强管理的今天,设备的设计、制造和管理使用水平的提高,对于一部分设备来说,过去认为浴盆理论的初始故障期基本上已不存在了,代替‘浴盆曲线’将是转了180°的厂字——‘(?)’形曲线”。我认为这种“(?)”形曲线的适用范围很小。对于目前机电一体化的大多数生产线而言,不能认为浴盆曲线已不适用,而仅是该曲线的向左平移,即初期故障期缩短,如图所示。
“Chinese equipment management” magazine in 1989 the third National Gold Administration Comrade Zhang Zuoching article “about the scope of application of bathtub curve” pointed out: “In the technological progress and strengthening management today, the equipment design, manufacture and management of the level of use In the past, the initial failure period of the bathtub theory was considered to have largely disappeared. For the sake of part of the equipment, instead of the ’bathtub curve’, it would be a factory-word curve with a rotation of 180 °. I think this kind of ”(?)" Curve is very small in scope. For most current mechatronic production lines, the bathtub curve can not be considered to be unsuitable, but only the left translation of the curve, ie the initial failure period is shortened as shown.