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开孔率     
相关语句
  opening ratio
    The pressure drop ΔP/Z decreased withincreasing opening ratio Φ, unit height H and decreasing inclination angle β;
    填料层压降△P/Z随开孔率Φ、盘高H的增加以及倾角β的减小而降低;
短句来源
    The heightof mass transfer unit HOG decreased with increasing inclination angle β and decreasingunit height of the packing H ,and influence of opening ratio Φ on the height of masstransfer unit HOG had a suitable value, witch was about 6%-8%.
    气相总传质单元高度HOG随倾角β的增大和盘高H的减小而降低,开孔率φ与气相总传质单元高度HOG无单调的比例关系,而有一个适宜值,该适宜值约为6%~8%。
短句来源
    The result shows that the method of increasing evenly the thickness of flat covers for the reinforcement with an opening ratio below 0.5 could not solve the stress concentration problem induced at the edges of openings and realize the reinforcement result;
    结果表明,对于开孔率小于0.5的平盖开孔补强采用均匀增加平盖厚度的方法,不能解决孔边产生的应力集中问题,难以达到补强的效果;
短句来源
    The quality of scrubbed gas accords with requirements after the develop- ment of the design of water scrubber for use in the syntheis of oxalic acid now in our coun- try,the methods are; increasing the water quantity to 50m~3/h,enlarging the opening ratio of tower plate to 19.55%(usually6%~12%),decreasing the weir gauge to 25mm,increasing the distance to 95mm between drop-pipe and downward plate.
    对目前国内合成法生产草酸所用水洗塔,采用加大水量到50m~3/h,提高塔板开孔率到19.55%(一般推荐6%~12%),降低溢流堰高为25mm,增大降液管到下层塔板间距为95mm 的办法,使洗涤后的气体达到要求。
短句来源
  opening rate
    On the contrary, due to three-dimensional tray' s opening designing specially, its opening rate may still improve much.
    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。
短句来源
  open area
    The research showed that light yellow cellular glass with over 40% open area, apparent density 220~310kg/m3 and 2.5~3.4MPa compression strength can be manufactured under the following condition: the addition of blowing agent 2.0~4.0%, finishing-burn temperature 1150°C, and the fineness of calcareous slag 180 mesh.
    研究结果表明,发泡剂掺量为2.0%~4.0%,烧结温度为1150℃,增钙渣通过180目方孔筛,可以制得开孔率大于40%、表观密度220~310kg/m3、抗压强度2.5~3.4MPa的淡黄色保温材料。
短句来源
    By analyzing the simulation result, we proved that velocity of flow has less effect on the nonuniformity of gas distribution, and it mainly determined by axial position of section above the distributor and open area.
    本文选取集油箱式结构的一个单元,通过CFD模拟给出了气体通过集油箱后的流动特性,并且通过模拟结果证明了气体通过集油箱后,其气体分布的不均匀程度与集油箱的开孔率、距集油箱的截面位置有关,并且回归出三者之间的函数关系。
短句来源
    The experiments on φ500mm plain concrete archs and φ1000mm ceramic archs with >50% open area were carried out in Kaifeng Fertilizer Plant in 1980. The "thin shell" theory was applied to analyze the stress and the equations for calculating circumferential and radial stress on archs were derived.
    开封化肥厂从1980年开始研究开孔率>50%的球拱。 先后进行了Φ500mm素混凝土球拱、Φ1000mm全瓷球拱的试验,并应用薄壳理论对球拱作应力分析,推导出球拱的环向力和径向力的计算公式。
短句来源
  “开孔率”译为未确定词的双语例句
    A PRIMARY STUDY OF THE TWO-PHASE CONTACT REGIME ON F-1 VALVE TRAY AT FIVE FRACTIONAL AREAS OF VALVE HOLES
    五种开孔率下F-1浮阀塔板两相流接触状态初步研究
短句来源
    Study on Performance of Non-Uniform Perforated Compound Tray
    非均匀开孔率复合塔板性能研究
短句来源
    Based on the experimental results, the structural parameters of the NF composite membrane (the pore radius and the ratio of the membrane porosity to the membrane thickness) were discussed on the basis of the fixed-charge model and the pore model.
    根据实验结果关联计算了复合纳滤膜的反射系数和溶质透过系数等膜性能参数,膜孔径、开孔率与膜厚之比等膜结构参数。 运用固定电荷模型和细孔模型分析估算了膜孔径、开孔率与膜厚之比等膜结构参数。
短句来源
    The free area rates of the distributor were 0.266, 0.672 and 2.549 respectively. The heights of the separator were 115mm, 275mm and 420mm respectively.
    实验通过压差法、体积膨胀法测量了气液分离区高度分别为115mm、275mm和420mm以及气体分布装置开孔率分别为0.266、0.672和2.549时反应器中升气管、降液管的气含率以及在整个反应器中的总气含率;
短句来源
    tray free areas, 9.9, 12.3, 14.9 and 15.4%;
    塔板开孔率为9.9、12.3、13.2、14.9及15.4%;
短句来源
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  opening ratio
The mechanism of internal pressure fluctuation is obtained by using the proposed method in the frequency domain and a new equivalent opening ratio is defined to evaluate internal pressure fluctuation.
      
Helmholtz resonance is likely to occur when the equivalent opening ratio is adequately high, and controlling individual opening dimension is an effective strategy for avoiding Helmholtz resonance in engineering.
      
The technique is illustrated in the case of a plane turbulent impinging twin-jet with an opening ratio of 10.
      
It is also demonstrated that large chirp and mismatch of the phase inversion reduces the eye opening ratio (EOR) which can seriously affect the performance of the wavelength converter to be used as a sub-system component in all-optical networks.
      
The effects of the feed rate, the gas flowrate and the opening ratio and hole diameter of the perforated plates on the operating stability of the fluidized bed were examined.
      
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  opening rate
This is because energy losses by friction and water surface oscillations increase as the approach velocity from the gate increases as the gate opening rate is larger than 0.4.
      
The opening rate-constant appears to be voltage independent.
      
The probability of channel opening at high concentration was found to be >amp;gt;0.9 for each, thus showing (a) that their efficacy is high and (b) that the opening rate for the fully-liganded channel is higher than previously thought.
      
External Ba2+ decreased the Na channel opening rate and increased the closing rate.
      
At voltages close to the midpoint of the gating curve, the opening rate decreased by a factor of 1/2.8 while the closing rate increased by 2.0-fold.
      
更多          
  open area
A population of the Japanese scallop, Mizuhopecten yessoensis, found in the open area of Peter the Great Bay (Sea of Japan), which was not protected against southeastern summer monsoons, has been studied.
      
The aggregation was the lowest in the open area of a neutral lake.
      
The flows almost completely covered the smoothed flat open area of the volcano and even invaded the larch forest surrounding the volcano, where they bent, overturned, broke, and occasionally uprooted and dragged over some distance some large trees.
      
Nesting preferences discovered for the nest tree and its surroundings, included height and diameter of trees, age of the forest stand, distance to the nearest open area or forest road and occurrence of open areas in the vicinity of the nest.
      
In all three groups, mean density of faeces decreased in the following order: shelter, edges of arena, area around shelter, remainder of open area.
      
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The hydrodynamics of perform trays were studied using air-water system in a column with a 1200 x 400mm rectangular cross section to determine the effect of tray geometrical parameters and operating conditions on the pressure drop, entrainment and weeping. Geometrical variables and operating range were mainly as follows: slot widths, 3, 3.5, 4, 4.5 and 4.7mm; tray free areas, 9.9, 12.3, 14.9 and 15.4%; deflector widths, 150, 200, 250 and 300mm; tray spa-cings, 400, 500, 600, 700 and 800mm; liquid flow rates per...

The hydrodynamics of perform trays were studied using air-water system in a column with a 1200 x 400mm rectangular cross section to determine the effect of tray geometrical parameters and operating conditions on the pressure drop, entrainment and weeping. Geometrical variables and operating range were mainly as follows: slot widths, 3, 3.5, 4, 4.5 and 4.7mm; tray free areas, 9.9, 12.3, 14.9 and 15.4%; deflector widths, 150, 200, 250 and 300mm; tray spa-cings, 400, 500, 600, 700 and 800mm; liquid flow rates per unit weir length, 20, 30, 45 and 60m3/m.h; and superficial gas velocities, 0.60 to 2.8m/s. Experimental data were correlated and correlations were presented for calculating the pressure drop, entrainment and liquid weeping. Furthermore, based on the experimental results for the entrainment and weeping from the tray,the expressions were given also to predict the upper limiting hole velocity at which the entrainment from the tray is 10%, the lower limiting hole velocity at which the liquid weeping from the tray is 5%. In addition, the effect of inlet weir on the weeping were tested and a simiempirical model was derived for the inlet weir design.

木文以空气-水系统在1200×400mm矩形装置内对网孔塔板的流体力学进行了试验研究。试验所采用的塔板参数和操作条件为:塔板开口宽度为3、3.5、4、4.5及4.7mm;塔板开孔率为9.9、12.3、13.2、14.9及15.4%; 挡沫板宽度为150、200、250、300mm;板间距为400、500、600、700及800mm;液流强度为20、30、45、60m~3/m·h;气体空塔速度为0.60—2.8m/s。测定了各有关参数对塔板压降、雾沫夹带和泄漏的影响,并对试验数据进行了关联,得出了计算塔板压降、雾沫夹带、泄漏、上限气速、下限气速及操作弹性等的关系式,以便用于网孔塔板的设计。

The flooding point and hold-up of the dispersed phase in an extraction column with reciprocating-sieve plates of 32 mm inside diameter and 1960 mm effective column height have been investigated under the following conditions: Percent perforation of the plates 40%, 53.5% and 63.7%, diameters of perforated holes 7.8, 9.0 and 9.8 mm, and distances between plates 20 and 40mm respectively. Experiments were carried out with three different liquid-liquid systems covering a rather wide range of physical properties.

在塔径32mm,高1960mm的振动筛板萃取塔中,用叔胺N_(235)-TBP-煤油/水等三个无传质体系,进行了液泛点和塔藏量的研究.作者认为两相流过筛孔的实际相对速度,与塔板在单位时间内对单位质量液体所做的功有关,并与体系物性及板间距相关.由于这种想法,建议用A~2F~3代替常用的AF,可以较好地关联本实验数据,和较简明地反映各参数对液泛点和塔藏量的影响,得到了一个新关联式.研究结果指出:①振幅和频率对液泛点和塔藏量的影响是不同的;②分散相的选择无显著影响,③塔板开孔率和板间距是肯定有影响的.实验的振动强度及体系物性参数的范围较宽,塔板开孔率大,板间距小,并采用金属萃取广泛应用的叔胺及二(2-乙基己基)磷酸苹取剂以及煤油稀释后作为有机相.因此,本工作对推广这种塔于金属萃取将有一定的促进作用.

The two-phase contact regime on F-1 valve tray at five different fractional areas of valve holes has been studied.At specified experimental conditions, the two-phase contact regime on F-l valve tray is the same as that on Hy-Contact valve tray. At a fixed fractional area of valve holes and a constant gas velocity, with increasing liquid rate there were present in turn three contact regimes: spray,mixed-froth and froth.From the zones of contact regimes it is shown that the fractional area of valve holes has no...

The two-phase contact regime on F-1 valve tray at five different fractional areas of valve holes has been studied.At specified experimental conditions, the two-phase contact regime on F-l valve tray is the same as that on Hy-Contact valve tray. At a fixed fractional area of valve holes and a constant gas velocity, with increasing liquid rate there were present in turn three contact regimes: spray,mixed-froth and froth.From the zones of contact regimes it is shown that the fractional area of valve holes has no effect on the range of mixed-froth regime zone,but with decreasing fractional area this zone will shift towards the side of smaller inlet clear liquid height.Including the factor of fractional area, criteria correlations of inversion points of regimes are proposed.

为适应当前国内石油及化工生产中所广泛应用的F-1型塔板开孔率变化范围较宽的特点,对F-1型塔板五种开孔率(11.9%,10.3%,8.7%,7.1%,5.6%)进行了塔板上的两相流接触状态研究。 试验条件下,F型浮阀塔权与锥心浮阀塔板上两相流接触状态是完全相同的。在一定气速下,开孔率不同,随着液流强度的增加,塔板上仍依次出现喷溅、混合泡沫.完全泡沫三种状态。由操作状态区域图上表明,开孔率对混合泡沫区域的范围大小没有影响,但开孔率减小,混合泡沫区域向入口清液层减小的方向移动。本文考虑了开孔率因素,得出了板上两相流接触状态转变点的准数关联式。

 
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