油田使用的潜油电机引接电缆头密封质量差，严重影响机组正常运行。
The under electrical machine and leading cable head used in oilfields were of poor quality, which has greatly influenced the operation of the unit.
电缆如果需要分段使用，电缆分段后必须用防水封帽将电缆头密封，防止进水。
If the cable should be used sectionally, the head of the cable must be sealed in order to prevent water intake.
电缆如果需要分段使用，电缆分段后必须用防水封帽将电缆头密封，防止进水。
If the cable should be used sectionally, the head of the cable must be sealed in order to prevent water intake.
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