Only up to a point. Conventional index-tracking has a logical advantage on its side: a value-weighted index represents, by definition, the performance of all investors.
只有达到这么一点,传统的指数跟踪在这方面有一个逻辑优势:按照定义,一个以价值为权重的指数代表所有投资者的业绩。
It was studied that the effects of aging on conventional index of asphalt binder by testing the penetration, softening point, ductility and viscosity on the PAV residue.
对经过不同程度老化的沥青,进行常规的三大指标试验和粘度试验,探讨老化对沥青胶结料常规指标的影响,建立了耦合老化效应的沥青胶结料粘温方程。
Based on the practice, discussion is made on the performance and preparation of modified asphalt, and analyzed from two aspects of conventional and unconventional index assessment.
结合工程实践,从分析改性沥青性质、制备入手,通过对工程中常规指标评价、非常指标评价两个方面对改性沥青性能进行了分析。
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