design theory and calculation method 设计理论和计算方法
But because of its application for a short time, relevant research is still lacking, design and calculation theory is not perfect, we must be for further research.
但由于其应用时间不长，相关研究还不够深入，设计计算理论不完善，有待于进一步研究。
This article has presented brake rigging device's design and theory calculation of brake distance of the first high speed power car in our country.
本文介绍了我国首台高速动力车基础制动装置的设计及制动距离的理论计算。
This paper applies vague overall evaluation for indoor environment design scheme optimization, and introduces the basal theory and calculation method.
本文将模糊评价法引入室内环境设计方案的优选过程，介绍了模糊评价法的基本原理和计算方法。
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