低标号水泥 low grade cement
低标号混凝土 low grade concrete
低热水泥 low head cement
低位差堰 low head dam
低水头水电厂 low head hydroelectric power station
低标高桥 low level bridge
低标高贮水器 low level cistern
低标高混合设备 low level mixing plant
低水平面泄水道 low level sluiceway
低石灰水泥 low limed cement
低压空档统 low pressure air conditioning system
低压混凝土 low pressure concrete
低标号混凝土 low grade concrete
低热水泥 low head cement
低位差堰 low head dam
低水头水电厂 low head hydroelectric power station
低标高桥 low level bridge
低标高贮水器 low level cistern
低标高混合设备 low level mixing plant
低水平面泄水道 low level sluiceway
低石灰水泥 low limed cement
低压空档统 low pressure air conditioning system
低压混凝土 low pressure concrete
低压热水供热系统 low pressure hot water system
低压湿煤气罐 low pressure wet gasholder
低矮建筑 low rise buildings
低矿渣水泥 low slag cement
低坡屋顶 low slope roof
低坍落度混凝土 low slump concrete
低层住宅 low storied dwelling
低速度系统 low velocity system
低湿度硅酸盐水泥 low water retentive portland cement
低水位 low water stage
低和易性混凝土 low workability concrete
下弦杆 lower boom
桁架的下弦杆节点 lower chord panel points
低临界临 lower critical velocity
爆炸下限 lower explosive limit
下游闸门 lower gate
下半平面 lower half plane
下游闸门顶盖 lower lock head
下游水库 lower reservoir
下屈服点 lower yield point
最低水位 lowest water level
屋顶窗 lucarne
起重机臂的转动 luffing
倾斜式缆道桅杆 luffing cableway mast
旋臂起重机 luffing crane
行李间 luggage room
木材 lumber
木材的收缩量 lumber shrinkage
照闷 luminaire
发光灯 luminescent lamp