Moreover, in order to investigate into all factors of how the cable works, one needs to note the specific area of its use and be always ready for new puzzles, which nature gives us.
此外，为了深入调查影响线材工作的各种因素，我们需要特别留意线材使用的特定环境，并时时准备欣然接受大自然赐予我们的新奥妙。
The first class cable – suitable for one single –phase earthing – block time does not exceed one minute each time. Max. time not exceed 8 hours , and not exceed 125 hours in all in one year.
第一类——用于单相接地故障时间每一次一般不大于1min，亦可用于最长不超过8小时，每年累计不超过125小时的系统。
The first class cable – suitable for one single –phase earthing – block time does not exceed one minute each time. Max. time not exceed 8 hours , and not exceed 125 hours in all in one year.
第一类——用于单相接地故障时间每一次一般不大于1min，亦可用于最长不超过8小时，每年累计不超过125小时的系统。
应用推荐