... low grade mineral 低品位矿石 low head 低压头；低扬程 low head hydroelectric power station 低水头水电站 ...
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大型泵站低扬程泵装置效率指标的推算_水利工程 关键词：低扬程；泵装置；水力性能；指标；推算 [gap=1429]Key words:low head；pump system；hydraulic performance；index；calculation
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low head cement 低热水泥
low head dam 低位差堰
low head of hydratation cement 低热水泥
semi-low head machine 立弯式连铸机
Low Head Hydroelectric Power Station 低水头水电厂 ; 低水头发电厂 ; 低水头水电站
low head water power plant 低水头水电厂
low head pump 低压头泵
low-head 低水头 ; 低架式
Ultra-Low head 超低浓度头
Comparison between 2 types of outlet conduit was executed by both numerical calculation and model test. The conduits，including siphon outlet and straight-tube outlet，are usually applied for a vertical axial-flow pump with low head.
采用数值计算和模型试验的方法对低扬程立式轴流泵虹吸式和直管式2种不同形式的出水流道进行了比较，揭示了这2种出水流道的基本流态，测试了这2种形式出水流道的水力损失。
参考来源 - 低扬程立式轴流泵出水流道基本流态及水力性能的比较—《南水北调与水利科技》—2007年第2期—龙源期刊网·2,447,543篇论文数据，部分数据来源于NoteExpress
以上来源于: WordNet
Flowrate insufficient or too low head.
流量不足或扬程太低。
Small guan know they did wrong, low head, red face had.
小关知道自己做错了，低着头，红着脸低头认错。
She bumped her head against a low branch.
她的头撞到一根低矮的树枝上。
People driving during a tornado are told to find low ground and lay flat,facedown, with their hands covering their head.
VOA: special.2011.04.19
His head was low on his chest and he seemed to be praying.
VOA: special.2009.12.14
Kim says North Korea wants to improve its negotiating hand by saying it will not be coming to talks with its head head low.
VOA: standard.2009.10.15
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