Based on actual situation of power grids, the authors propose the concept of transmission cross-section and that of time transmission cross-section.
根据电网输电的实际情况提出了输电断面和时间输电断面概念。
The influence of the structure change of the fiber cross section on the transmission spectrum is simulated, and derived qualitatively.
数值分析了光纤截面结构变化对于光栅传输谱的影响，并给出这种影响的定性解释。
Furthermore, the local deformation and the cross section arrangement for transmission towers are also discussed.
此外，还讨论了大跨越塔的局部变形问题以及隔面设置对局部变形的影响。
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