This unit group includes plumbing and other pipefitting trade contractors who own and operate their own businesses.
此单元组包括管道和其他管道安装行业承包商，其拥有并经营自己的企业。
This unit group includes carpentry and cabinetmaking trade contractors who own and operate their own businesses.
本单元组包括拥有和经营自己企业的木工和细木工行业承建商。
This unit group includes roofing, masonry, painting and other construction trade contractors, not elsewhere classified, who own and operate their own business.
本单元组包括拥有并经营自己的业务的屋顶，砖石，绘画和其他建筑行业承包商及其他未分类的。
This unit group also includes prefabricated product installation and service contractors and proprietors of some repair and service establishments.
此单元组还包括预制产品安装及服务承办商和业主的一些维修和服务机构。
This unit group includes excavating, grading, paving, drilling and blasting contractors who own and operate their own business.
本单元组包括拥有和经营自己生意的挖掘，分级，铺路，钻井和爆破承建商。
Based on the characteristics of BOQ (bill of quantities) valuation model, this paper elaborates on the risk analysis method for integrated unit price from the perspective of contractors.
结合工程量清单计价模式的特点，从承包商的角度对综合单价风险分析方法进行了阐述。
This unit group includes excavating, grading, paving, drilling and blasting contractors who own and operate their own business.
该项包括那些拥有和经营自己企业的承包商，涉及的范围有挖掘，分级，铺砌，凿岩爆破这些方面。
This unit group includes excavating, grading, paving, drilling and blasting contractors who own and operate their own business.
该项包括那些拥有和经营自己企业的承包商，涉及的范围有挖掘，分级，铺砌，凿岩爆破这些方面。
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