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122 5001 生产成本 production cost 123 5101 制造费用 cost of production 124 5201 劳务成本 service cost 125 5301 研发支出 research and development expenditures 126 5401 工程施工 建造承包商专用 engineering construction exclusively for construction contractor 127 5402 工程结算 建造承包商专用 engineering settlement exclusively for construction contractor 128 5403 机械作业 建造承包商专用 mechanical operation exclusively for construction contractor
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