工作水头 meaning in Chinese
net head
operating head
working head
Examples
- The calculated result from an example shows that the stable sectional area reduces with the increase of working head , or the decrease of the tailrace tunnel length
计算结果表明，尾水调压室断面面积随水轮机工作水头的增大或尾水洞长度的缩短而减小。 - The optimal combination among structural factors was obtained through experimental results . in addition , which experimental factor has significant influence on the exponent of flow state and flow rate of these emitters was analyzed . finally , several regression models describing the relationship between flow rate and structural parameters of flow passage were set up under the condition of certain flow passage length and 10m working pressure
根据实验结果分析了各因素之间的最优组合，分析了各因素对滴头流态指数、滴头流量的影响显著性，并在流道长度一定的情况下，建立了10m工作水头下滴头流量与流道结构参数之间的模型。 - The special structure of zippered plastic pipe zippered seep holes made a greater seepage quantity on the condition of bare pipe ( no anti - blocking material adopted at the mouth of seep holes ) . so several kinds of anti - seepage material were adopted in the experiment of this part in order to find the proper anti - seepage material ( nonwoven fabrics glued by neoprene ) and working head ( 3m ' s working herd on initial irrigation )
由于拉链式塑料管的独特构造(拉链式渗水孔口) ，裸管(渗水孔口不采用任何防堵材料)情况下渗流量很大，所以本部分试验采用了几种防渗材料试验，最后通过比较分析，找到了合适的防渗材料(氯汀胶粘无纺布)和工作水头(初始灌水时3m工作水头) 。 - ( 4 ) through the hydraulic property experiment of micro - hole lateral pipes of simple sdi in air , it was found that the average pressure of 60 mitre length lateral pipes was at the position of per 40o / o ~ ~ ~ 50 % of the effectual pipe length from the fist micro - hole , major pressure - loss was occurred at the ahead part of half pipe . the pressure uniformity reduced with orifice aperture ? increasing , and the relationship between pressure uniformity and initial water pressure was poor . running under the initial water pressure of 1 . 5 meter , the discharge uniformity reduced with orifice aperture ? increasing , and when the orifice aperture smaller than or equal 1 . 0mm , irrigation uniformity could achieve above 0 . 6
（ 3 ）通过对空气介质中简易地下滴灌的微孔毛管试验研究发现： 60m管长的毛管平均压力水头的位置基本上在距第一孔口的有效管长40 - 45的地方；大部分水头损失发生在毛管的前半部分；压力均匀度随孔径的增大而减小，但与初始工作水头关系不密切；在1 . 5m以下的工作压力下运行，沿程出流均匀度随孔径的增大而降低，当孔径不大于1 . 0mm时，灌水均匀度可以达到60以上；当孔径大于等于1 . 2mm时，灌水均匀度低于50 。