即开孔范围
开孔率（aperture ratio）在不同领域有不一样的定义 [1]，在光学范畴（涵盖液晶显示器），是指透光区域和总面积的比率，因为并不是整个次像素都透光。
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... Mole Percent 摩尔百分数 ; 摩尔百分比 ; 摩尔百分数 ; 克分子百分比 percent change 百分比变化 ; 变化百分比 ; 变化百分率 ; 百分变化率 percent opening 开孔率 ...
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... 开孔面积(hole area) 开孔率(fractional hole area) 气相流率(vapor flow rate) ...
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... surface) 实现筛分作业具有筛孔的工作面 6.3 筛孔(mesh) 筛面上开有与筛分煤粒尺寸相应的孔 6.4 开孔率(percentage of opening) 筛孔总面积占筛子全面积的百分数 6.5 筛子工作面积(screen working area) 筛分机工作部分的结构面积 6.6 筛分效率(efficiency o...
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Tray efficiency decreased when hole area percent increased from 8.47% to 15.68%. In normal operation, tray efficiency of wave directed floating valve tray was higher than those of Fl valve tray and sieve tray.
结果表明：随着动能因子的增大,板效率略有增加；出口堰高越大,板效率越高,当气液接触达到喷射状态后,堰高对板效率的影响较小；在8.47%-15.68%的开孔率范围内,随开孔率增大板效率降低；在正常的操作状态下,波纹导向浮阀塔板的板效率高于筛板和F1型浮阀塔板。
参考来源 - 一种新型浮阀塔板传质效率的研究Through the imitate experiment, we can get the result that the most important factors affected velocity and turbulence intensity of airflow is porosity.
通过仿真实验认为风障的开孔率是气流速度和湍流强度的主要影响因素。
参考来源 - 风障控制物料堆粉尘颗粒扬起的数值模拟及应用The results indicated that the connection of the pores, the porosity and open-porosity increased with the increasing of NH4HCO3, but the roundness of the pores decreased slightly at same time.
实验表明,在相同的烧结工艺下,随着NH4HCO3添加量的增多,材料孔隙率、开孔率升高,孔隙连通性增强,孔隙圆度略有降低。
参考来源 - 梯度多孔TiNi合金的制备与性能的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
塔板数和塔盘开孔率偏低，使乙腈回收率低、处理能力小。
Moreover, fewer plate number and low perforation area lead to low acetonitrile recovery rate and treatment capacity.
对于三维塔板，由于其独特的开孔设计，其开孔率还可以有较大的提高。
On the contrary, due to three-dimensional tray' s opening designing specially, its opening rate may still improve much.
将丝蛋白溶液涂在旋转卷筒上，可以对图案、管开孔率以及复合特性进行控制。
Winding the silk solution on a rotating mandrel provides control of tube properties like winding pattern, tube porosity and composite features.
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