substitution performance

This paper introduces some basic situations on the development of high performance hard ferrites of TDK and Hitachi Metal of Japan, and reports the new advances on ion substitution and related technology of hard ferrite materials.

介绍了日本TDK、日立公司等开发高性能永磁铁氧体的一些基本情况，简要报道了离子代换等有关工艺技术的最新进展。

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this water-quenched slag concrete research was appraised by substitution performance result in different substitution quantity of cement.

本研究并针对不同取代水泥量之混凝土之取代成效加以评估。

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Effect of the substitution of gypsum with limestone on the hydration process and performance of C3S, C3A and Portland cement was explored.

研究了用石灰石替代石膏对单矿物C3S、C3A及硅酸盐水泥水化过程及性能的影响。

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