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1.序言通常,在确定设备更新投资时,均须预先确定设备的更新最优年限,并顾及由于科学技术进步而带来的设备过时问题。 M.Terborgh提出的这个问题已由J.Descrousseaux给予了解决(参见《Revue de1’industrie minérale》,1969,Vo1.51,№1),其解决方法是按同类型设备,在连续技术进步和不连续技术进步情况下的更新,运用三时间函数方程。——本文简要介绍了应用这一原理绘制
1. Introduction Generally, when determining the equipment renewal investment, it is necessary to predetermine the optimal life span of the equipment and take into consideration the equipment outdated problems due to the progress of science and technology. This problem posed by M. Terborgh was solved by J.Descrousseaux (see Revue de l’industrie minérale, 1969, Vo1.51, №1) and the solution was to equip the same type of equipment, with continuous technological advances and without Continuous technical progress updates, the use of three time function equations. - This article briefly describes the application of this principle to draw