JTS 277-2014 Quota for Consumption of Concrete and Mortar in Construction Works for Water Transporta...
JT交通运输标准
JT交通运输标准
JT交通运输标准
JTS 277-2019 水运工程混凝士和砂浆材料用量定额
JTS 277-2019 Quota for Consumption of Concrete and Mortar Materialin Water Transportation Engineerin...