...；接地工程； 电气工程；施工管理 [gap=420]Keywords: Petrochemical Engineering; quality management; grounding engineering; electrical engineering; construction management ..
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And lightning protection engineering and grounding engineering technology services.
以及雷电防护工程及接地工程技术服务等业务。
While graphite content in electrically conductive concrete applied in a grounding engineering is 10%, the power-frequency grounding resistance of the grounding devices is less than 0.
工程选用石墨掺量为10%的导电混凝土，使得接地装置的工频接地电阻均不大于0。
In other countries, wind power grounding materials and engineering are done by professional companies, domestic little.
在国外，风电的接地材料与工程都是由专业公司在做，国内却很少。
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