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 and maintenance departments of factories, plants, mines, shipyards and other industrial establishments.
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.
本年度的其他能源部门收购还包括掌握余热能源发电业务关键技术的Calnetix Inc，但具体数额尚未公布。
Other energy-unit acquisitions this year included the waste-heat power generation business of closely held Calnetix Inc. for an undisclosed sum.
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。
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。
They are employed by electrical contractors, maintenance departments of large institutions, such as hospitals or industrial plants, or they may be self-employed.
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