... power cable tunnel 电缆隧道 ; 电力电缆隧道 underground cable tunnel clause 地下电缆管道条款 cable tunnel laying 电缆隧道敷设 ...
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For laying indoor, in tunnel, cable French, well or direct in ground, able to bear external mechanical forces and certain pulling force.
室内、隧道、电缆沟内或直脉地下，能够承受一定的机械外力和一定的拉力。
For laying indoors , in tunnel, cable trench, or direct in ground, able to bear external mechanicalforces, but unable to bear large pulling force .
室内、隧道、电缆沟内，或埋地敷设等，能承受一定机械外力，但不能承受大的拉力。
For laying indoors, in tunnel or cable trench, unable to bear external mechanical forces, Singlecore cable in magnetic duct is not permissible.
室内、隧道、电缆沟等场所，不能承受机械外力，单芯电缆不允许敷设在磁性管道中。
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