求翻译：导线的连接是线路的薄弱环节，连接不好容易发生线路故障，增大接触电阻，使导线接头发热，产生电火花，烧毁绝缘。因此接头务实牢靠、紧密，接头的绝缘强度不应低于导线的绝缘强度。是什么意思？

Wire line connection is weak, prone to bad connections line failure, increased contact resistance, the wire connector heat, spark, burning insulation. Therefore, joint practical solid, tight, joint strength of not less than the wire insulation dielectric strength.

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The wire connection is the line weak link, connects has the line fault not with great difficulty, increases the contact resistance, causes the wire joint to give off heat, produces the electric spark, the overburning insulation.Therefore attaches is practically sturdy, is close, the attachment insul

Wire connection is a circuit of weak links, bad connection fault-prone, increasing contact resistance, wire connector heat, sparks, burning insulation. Therefore joint pragmatic tight, tight, dielectric strength of joint of no less than dielectric strength of the wire.

Wire connection is a circuit of weak links, bad connection fault-prone, increasing contact resistance, wire connector heat, sparks, burning insulation. Therefore joint pragmatic tight, tight, dielectric strength of joint of no less than dielectric strength of the wire.