关键词:预算定领;冲洗管;技术经济;评价 [gap=727]Key words:budget quota;washing pipes; technology and economy; evaluation
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backup washing pipe 备用冲管
hot washing pipe 热洗井
washing pipe for fiberscopes 纤维光束内窥镜用冲洗吸管
steam washing pipe 蒸汽冲管
washing pipe packing 水龙头冲管盘根
pipe-washing 冲管
energy supply pipe washing 能源管道冲洗
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