time-height section

The article analyzes all factors concerning switching time of bi-directional multiplex section protection ring on 2-fiber, gives the approximate engineering calculation formula and basis.

本文对影响SDH二纤双向复用段保护环的倒换时间的各种因素进行了分析，给出了工程设计中的近似计算公式与依据。

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It has shown obvious low-values section and high-low values sections according to the analysis of special evolution characteristics since May, 2001. By time queue, the velocity ratios always vary below 1.70, a value lower than average.

从2001年5月到现在波速比空间演化特征来看，明显出现了低值异常集中区和高低值异常交替区。从时间序列演化特征来看，波速比始终处于低于平均值1.70以下。

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All data defined in the LOCAL-STORAGE SECTION have storage allocated each time a program is called and de-allocated when the program ends.

每次调用程序时，LOCAL-STORAGE SECTION中定义的所有数据都将分配存储空间，并在程序结束后取消该分配。

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Restore database: the to a point in time option is in the destination for restore section.

还原数据库：“目标时间点”选项位于“还原的目标”部分。

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It was found that, in general, ascending time ratio, fire load ratio, cross-section dimension and slenderness ratio have a significant influence on residual strength.

得出结论：升温时间比、火灾荷载比、截面边长以及长细比是影响火灾全过程作用后圆钢管混凝土柱剩余承载力的主要影响参数。

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