暴雨雨水管理模型
China′s agricultural development
闭管水银压力计
close-tube mercury manometer
玻管水银干湿计
mercury-in-glass psychrometer
玻管水银温度计
mercury-in-glass thermometer
玻璃管水银温度计
mercury-in-glass thermometer
不正确的水管连接
incorrect water piping connection
布水管网设计
design of water distribution network
舱底水和压载水管系布置图
bilge and ballast piping arrangement
测压管水头线
piezometer tube water head line
出水管下盖片
lower water outlet pipe gasket
垂直内螺纹管水冷壁
verti cal rifled waterwall temperature difference between adjacent tubes