青云翻译

3, the use of color steel roof tile as air terminals, the upper part of the steel columns and concrete columns outside of the lower part of the main steel columns (each column at least two) to do lightning deflectors, and then flash with steel fence device, network reliability and ground under the w

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3rd, meets using the roof color steel tile achievement dodges, upside various steel structures column and lower part outside the concrete structure column the jamb main reinforcement (each column many in two) makes the anti-radar downlead, also on meets with the steel guard rail dodges, under and th

正在翻译，请等待...

正在翻译，请等待...