حتما تا کنون در کنار جاده ها، خطوط انتقال برق را مشاهده کرده اید. خوب است بدانید که برای احداث خطوط انتقال در کنار جاده ها و ریل راه آهن و …، باید حداقل فواصل عمودی رعایت شود.
http://rail-news.ir/?p=6207
نظرات
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