Use: Use for ventilation system and protecting electrical wire.
用途: 用于进出口设备抗腐蚀排风吸尘管道和电缆保护.
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Use: Use for protecting electrical wire.
用途: 用作各种导线的保护管.
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Those bird people normal seen perching on electrical wire , building window and edge is not swiftlets!
所以,人们一般看到停留在电线杆, 建筑物窗沿或屋檐的都并非金丝燕!
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The mechanics calculation of electrical wire is the most important calculation on HV overhead transmission lines.
电线力学计算是高压架空输电线路力学计算中最重要的计算.
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