Based on the cable-stayed bridge using method of cantilever, the paper establishes the optimization model of construction phase with multi-objective and multi-constraint and gives the example.

采用多目标、多约束的优化方法，以悬臂施工主梁的斜拉桥为例，建立了施工阶段的优化模型，并给出算例。

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This paper describes briefly the principle of the phase stability of temperature in coaxial cables and its relationship with the cable construction and materials.

概述了同轴电缆的相位稳定性的原理，及其与电缆结构和材料的相互关系，也介绍了检测温度相位稳定性的试验方法。

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The conduction of special cable and special phase lock loop technology makes high signal more accurate;

特种的传导电缆和特殊的锁相环技术使高度信号更精准；

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