附着于管道的电线至少每4英尺（122.4厘米）需要用提供的夹子、电缆扎匝或绝缘胶带固定。
The wire shall be attached to the tubing with supplied clips, cable ties, or electrical tape, at least every 4 ft (122.4 cm).
附着于管道的电线至少每4英尺（122.4厘米）需要用提供的夹子、电缆扎匝或绝缘胶带固定。
The wire shall be attached to the tubing with supplied clips, cable ties, or electrical tape, at least every 4 ft (122.4 cm).
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