The spare cable or control cable that is normally not loaded with current shall be placed at the center in case of multi-layer laying.
多层敷设时，平时不载流的备用电缆或控制电缆应放置在中心部位。
"In the worst case, the carrier cable may fail and the spare tire could become separated from the vehicle, a road hazard for following vehicles that increases the likelihood of a crash," it said.
“最坏的情况是，载波电缆可能会失效，备用轮胎就有可能从车上脱落，给后续车辆造成危险，从而增加了发生车祸的可能性。”报告中说。
The fixed pulley is rotated by a cranking bar to wind the steel cable, a spare tire can be lifted, and the spare tire can be put down stably by rotating in reversal the cranking bar.
使用摇把转动定滑轮圈绕钢丝索，即可提升备胎，反转摇把即可平稳降下备胎。
The fixed pulley is rotated by a cranking bar to wind the steel cable, a spare tire can be lifted, and the spare tire can be put down stably by rotating in reversal the cranking bar.
使用摇把转动定滑轮圈绕钢丝索，即可提升备胎，反转摇把即可平稳降下备胎。
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