third moment meaning in English

第三势差
三阶矩量

In the third moment light and darkness will be separated forever as in the primordial division
在第三个片刻，光明和黑暗会在原始区分中被永远分割开。
This thesis aims to analyze how to select and assign prestressed tendon , how to design anchorage bearing joint , how to control the crack , how to calculate the axial prestressed force and the third moment and how to design the edge column of top layer . on the base of the research in and out our country and construction of the prestressed structure , some helpful conclusion and suggestion are presented , which is suggestive for the design and construction of long span continuous prestressed concrete frame
本文将综合设计与施工两个方面，对预应力筋的选用、布置，锚固区的设计及构造处理，裂缝问题，侧向约束对梁轴向预压应力及柱中第三弯矩的影响，顶层大跨边柱设计等几个问题进行系统的分析研究，并在国内外研究和大量工程实践的基础上，提出了一些建议和预防措施，对此类工程设计和施工有一定的参考价值。