Erect and maintain steel, wood or concrete poles, towers and guy wires.
树立和维护钢材，木材或混凝土电杆，塔和张索。
The effect of derrick guy wires nonlinear behavior to structure's deformation has been analyzed.
结果表明，井架绷绳的非线性效应主要对结构的刚度产生影响。
The effect of derrick guy wires nonlinear behavior to structure's deformation has been analyzed.
结果表明，井架绷绳的非线性效应主要对结构的刚度产生影响。
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