duct trench 中文意思是什麼
duct trench
解釋
電纜溝-
For laying indoors 、 in tunnels or cable trench, unable to bear external mechanical forces. singlecore cable in magnetic duct is not permissible
室內、隧道及電纜溝等場所,不能承受機械外力。單芯電纜不允許敷設在磁性管道中。 -
For laying indoors 、 in tunnel or cable trench, unable to bear external mechanical forces. single - core cable in magnetic duct is not permissible
室內、隧道及電纜溝等場所,不能承受機械外力。單芯電纜不允許敷設在磁性管道中。 -
For laying in 、 in tunnels and in cable trench, unable to bear external mechanical forces. single core cable in magnetic duct is not permissible
室內、隧道及電纜溝等不能承受機械外力的場所。單芯電纜不允許敷設在磁性管道中。
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