They are employed by electrical contractors and maintenance departments of buildings and other establishments, or they may be self-employed.
他们受雇于电业承办商及建筑物和其他场所的维修部门，或者他们亦可称为个体经营者。
They are employed by electrical contractors and maintenance departments of buildings and other establishments, or they may be self-employed.
他们受雇于电气承包商、建筑和其它设施的维修部门，或者自雇。
They are employed by electric power generation, transmission and distribution companies, electrical contractors and public utility commissions.
他们受雇于发电站，输电和配电公司，电业承办商及公用事业委员会。
They are employed by electrical contractors and maintenance departments of factories, plants, mines, shipyards and other industrial establishments.
他们受雇于电业承办商和工厂的维修工部门，工厂，矿山，船厂和其他工业场所。
They are employed by electrical contractors, maintenance departments of large institutions, such as hospitals or industrial plants, or they may be self-employed.
他们受雇于电业承办商，维修部门的大型机构，例如医院或工厂，或者也可以自谋职业。
Electric Cables Handbook is an extensive source of up-to-date and essential information for electrical engineers, contractors, supply authorities and cable manufacturers.
电缆手册是由多达到日期和电气工程师，承包商，供应部门和电缆制造商的基本信息来源广泛。
Electric Cables Handbook is an extensive source of up-to-date and essential information for electrical engineers, contractors, supply authorities and cable manufacturers.
电缆手册是由多达到日期和电气工程师，承包商，供应部门和电缆制造商的基本信息来源广泛。
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