API RP 505-1997 (R2013)
API RP 505-1997 (R2013)目前最新版Recommended Practice for Classification of Locations for Electrical Installations at Petroleum Facilities Classified as Class I, Zone O, Zone 1, and Zone 2
谢谢您的分享,金币已奖励! 感謝樓主分享!謝謝!:D:D:D 昨天花了2金币,下载不了,现怎么要3金币了 是中文版的吗?英文的看不懂
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