1) orifice tunnel
孔板洞
1.
In paper,writer analyses change regularities of LCB,sets up maths model of bending section ,compiles CASIO fx-4500P calculate program and discusses a new way of setting out in gradual change bending sections using electronic total station instrument on the basis of practice work in Xiaolangdi orifice tunnel project.
作者在小浪底工程孔板洞下弯段施工中 ,分析了下弯段的变化规律、建立了弯曲段数学模型、编写了卡西欧fx - 4 5 0 0P计算程序、探讨了利用电子全站仪进行渐变段施工放样的新方
2) multiple hole orifice plates
多洞孔板
1.
The degradation of rhodamine-B in the simulated wastewater has been experimentally investigated on a 220 L hydrodynamic cavitation set-up with multiple hole orifice plates to verify the effect of degradation with cavitation as well as investigate the influence of geometric parameters on degradation rate constant.
为了验证多洞孔板的空化效果和探讨几何参数等因素对降解速率常数的影响,在220L水力空化装置中利用多洞孔板对含有若丹明B染色剂的模拟印染废水进行了降解试验研究,结果表明:多洞孔板对若丹明B确实有降解作用,同时存在一个最佳的多洞孔板的面积比,并且降解速率常数随修正空化数的减小而增大。
3) floor hole
楼板孔洞
4) floor opening
楼板洞孔
5) flood-releasing tunnel
孔板泄洪洞
1.
In order to demonstrate the reliability of the water filling and pressure balance pipeline of flood-releasing tunnel in Xiaolangdi Multi-purpose Project,a prototype observation about the vibration characteristics of the pipeline was done at the upper water level of 252.
为了充分论证小浪底枢纽孔板泄洪洞充水平压管道的可靠性,对其在上游库水位为252。
6) template with nanoholes
纳米孔洞模板
1.
Fabrication and magnetic properties in cobalt template with nanoholes;
Co纳米孔洞模板的制备和磁性
补充资料：孔板
安装在封闭管道中，按节流装置的原理，测量液体、气体和蒸汽流量的检出元件。标准孔板是一块具有圆形开孔的金属薄板,圆孔壁与孔板前端面成直角,安装时孔板轴心与管道轴线同心。孔板已有国际标准(ISO 5167)。测出孔板两端压差，按此标准即可算出具有一定精确度的流量值。孔板取压方式在国际标准中规定为径距取压、法兰取压和角接取压（取压孔紧靠孔板）3种（图1）。当测量含有少量固体的液体或含有少量液体的气体时，为便于少量固体或液体通过，孔板的开孔可制成扇形的,或制成与管道的轴线是偏心的（图2）。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条