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This Specification specifies the technical requirements for excavation，…
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中国电力出版社 编
The standard is prepared based on the GB/T 1.1-2009 Directives for Stan…
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中国电力出版社 编
This guide is prepared to standardize the assessment of emer-gency resp…
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中国电力出版社 编
This Specification is prepared to standardize the constructionof slipfo…
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中国电力出版社 编
Specifications for Substation Ascending Operation and Protective Device…
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