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1·Very high quality insulators and point-to-point wiring on insulated standoffs are also used.

还采用很高质量的绝缘体，以及在绝缘体上进行“点-点”布线。

2·In this way, the 'contact point-sampling-contact point' access mode of the wiring terminal of the primary cable is changed to be the 'sampling-contact point-contact point' mode.

这样，将一次电缆接线端子接入方式由现有的“接点—采样—接点”方式改进为“采样—接点—接点”方式。