此外，在防止缠绕电缆退建，延长电缆使用寿命。
Furthermore the built in cable rewind prevents tangling and prolongs cable life.
不要用从一元店买来的橡胶层又轻又薄的延长电缆去给你的高清电视供电。
Don't use a dollar store extension cord with a flimsy, thin rubber sheath to get power to your HDTV.
我部主要生产制动单元、制动电阻、力矩电机控制器、变频器面板延长电缆、转速表、计数器。
I mainly produce braking unit, braking resistor, torque motor controller, inverter panel extension cables, tachometer, counters.
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