自流排水 meaning in English

artesian waste
free drainage
free draining
free-draining
gravity drainage

Gravity drainage systems inside buildings - general and performance requirements
建筑物内部的自流排水系统.一般和性能要求
Gravity drainage systems inside buildings - roof drainage , layout and calculation
建筑物内部的自流排水系统.屋面排水设计和计算
Gravity drainage systems inside buildings - sanitary pipework , layout and calculation
建筑物内部的自流排水系统.卫生管道设计和计算
Gravity drainage systems inside buildings - wastewater lifting plants - layout and calculation
建筑物内部的自流排水系统.废水提升设备.设计和计算
Gravity drainage systems inside buildings - installation and testing , instructions for operation , maintenance and use
建筑物内部的自流排水系统.安装和检验操作维修和使用的说明