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小孔径     
相关语句
  small aperture
     Through the theoretic analysis and test the measurement of value K with small aperture has higher accuracy than that with large aperture, while the best measuring distance is (1~3) N (close to the zone).
     通过理论分析和实验 ,用小孔径测量K值比用大孔径测量精度高 ,测量距离最佳为 (1~ 3)N(近场区 )。
短句来源
     Measuring Low Velocity Turbulence Field with Hartmann and the Extend of Small Aperture Beam Technique
     Hartmann测量低速湍流场及小孔径光束技术的拓展
短句来源
     Research on the ultra precision measuring method of diameter of small aperture
     小孔径超精测量方法的研究
短句来源
     Mechanics Effect Analysis of Pre-stressing Bolting Rope with Small Aperture
     小孔径预应力锚索力学效应分析
短句来源
     The Design of the long tapered hole tool with small aperture and big depth
     小孔径大深度长锥孔的刀具设计
短句来源
更多       
  small pore size
     (3) On the conditions of low temperature of 573 K, small pore size (1.5 nm for MCM-41 and 1.02 nm for pillared clays), high pressure of 600 bar and high feed mole ratio of N:H of 4:12 (0.3333), greater ammonia mole fraction in pore phase can be obtained, whereas only at low pressure of 100 bar can achieve a more
     (3)在低温573K、小孔径(对于MCM-41为1.5nm)和小孔宽(对于层柱孔为1.02nm)、高压600bar、高N∶H进料摩尔比4.12(0.3333)的条件下操作,可以获得较高的孔内氨平衡转化率。 然而,只有在低压100bar下操作才能使孔内氨产量的增加更为有效。
短句来源
     The influence of solvent system, additive, inorganic salt and second miscible polymer were analyzed. The results showed that small pore size PVDF UF membrane with high flux can be prepared by selecting optimum casting solution.
     分析了溶剂体系、添加剂种类、无机盐含量及第二组分PMMA等对膜性能的影响,实验结果表明,选择合适的溶剂体系和致孔剂,可制得高通量的致密小孔径PVDF超滤膜,同时,在PVDF膜中共混入少量与之相容的PMMA可显著改善该类膜的亲水性,进一步提高膜的水通量。
短句来源
     The small pore size PVDF UF membrane with high Flux was studied in this paper.
     本文主要研究了高通量小孔径PVDF超滤膜。
短句来源
     The properties of composite membrane using different base membrane are commented. The results indicate that the composite membranes with small pore size exhibit superior separation performance on the rejection of Na2SO4>90%.
     结果表明:用小孔径的合金膜为基膜得到的复合膜具有较好的脱盐能力,对Na2SO4的脱除率达到90%。
短句来源
     Because of the small pore size (0.41nm) and its hydrophile property, NaA zeolite membrane can be used in the separation of small molecules or separating water from organic substance by penetration. The main work of this thesis is
     A型沸石分子筛膜因其独有的小孔径(0.41nm)和亲水特性,在小分子气体分离和渗透蒸发分离有机物中的水分方面有很好的应用前景。
短句来源
更多       
  small diameter hole
     Application of the Technique of Springing Blasting in Small Diameter Hole to the Roadbed Pitting
     小孔径扩壶爆破技术在路堑开挖中的应用
短句来源
     Experimental study on magnetic abrasive machining of inner surface of small diameter hole
     小孔径内圆表面磁性研磨加工实验研究
短句来源
     The deep well coal road cable of small diameter hole and high pre-tension structure and craft were studied according to the condition of high stress and composite roof in Fengcheng coal field.
     结合丰城矿区高地应力、复合顶板等复杂地质条件,研究深井条件下煤巷锚索采用小孔径、施加高预应力的结构形式和施工工艺。
短句来源
     In this paper,experimental research was conducted on the magnetic abrasive machining of inner surface of general and small diameter hole( <20mm) of the ring,a kind of textile workpiece.
     本文以纺织配件钢领为例,对普通内圆表面和小孔径(<20mm)内圆表面磁性研磨加工进行了试验研究。
短句来源
  small pore diameter
     Thermal decomposition properties of titanium hydride and Al alloy foam with low porosity and small pore diameter
     氢化钛热分解特性与小孔径低孔隙率泡沫铝合金
短句来源
     In this paper, the Al alloy foam with small pore diameter (D<1mm) low porosity (65%
     本文制备了小孔径(D<1mm)、低孔隙率(65%
短句来源
     Praparation of Small Pore Diameter Column Packings of Porous Silica-bead for HPSEC
     一种用于高效体积排除色谱的小孔径多孔硅球填料的研制
短句来源
     According to this rule, a set of samples of Al alloy foam with small pore diameter (D<1mm) and low porosity (65%
     据此规律,成功地制得了小孔径(D<1mm)、低孔隙率(65%
短句来源
     The results show that at 940 K and during the stirring time period of 30~80 s, the porosity of the Al alloy melt foam is kept constant while the pore number increases and pore diameter decreases, which is a new method to fabricate Al alloy foam with high specific stiffness, low porosity and small pore diameter.
     结果表明 :在94 0K时 ,发泡剂氢化钛分解的 30~ 80s内 ,随着均匀分散时间的延长 ,铝合金熔体泡沫的孔隙率保持恒定 ,但孔数增多 ,孔径变小 ,由此获得了制备高比刚度、小孔径和低孔隙率泡沫铝合金的新途径。
短句来源

 

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  small aperture
The technique can be used when conventional methods are inapplicable because of the small aperture dimensions relative to the wavelength, the presence of fluctuations, or nonstationary conditions.
      
The response of an infinitely small aperture is calculated, and the explicit solution is found for the case of a circular aperture.
      
However, a relatively high level of speckle noise in the difference image is caused by the spatial filtering with a small aperture (laser beam) in the minimum of the superposition field in the Fourier hologram plane.
      
Platelet function was assessed using the PFA-100 system that allows for quantitative assessment of platelet function, reporting platelet aggregatability as the time required to close a small aperture in a biologically active membrane.
      
The work presented in this article investigates the behaviour of the current in the load impedances of a lossless coaxial cable, with homogeneous metalic shielding, presenting an electrically small aperture defect in the shield.
      
更多          
  small pore size
It is concluded that affinity interaction and separation occur mainly in the large pores, and small pore size does not favor improvement of adsorption capacity.
      
Monodisperse Poly (Styrene-co-Divinylbenzene) Particles (3.2 μm) with Relatively Small Pore Size as HPLC Packing Material
      
However, due to the relatively small pore size and potential instability of MCM-41 when immersed in water for long time periods, a second mesoporous silicate, SBA-15, has been investigated.
      
Through the modified wet process, porous chitosan beads with a relatively small pore size (0.01-13 μm) and moderate porosity (33-71%) could be prepared.
      
The diameter of the pore created by pore former varies from 100 to 300 μm, and macroporous glass has a narrow and small pore size distribution in mesoporous scale.
      
更多          
  small diameter hole
This small diameter hole has 51% of the cross-sectional area of a single microchannel and is 1.6 mm long.
      
The slots are elongated S shapes, terminating in a small diameter hole, equispaced around the outer 15% of the periphery.
      
  small pore diameter
We analyzed incoherent inelastic neutron scattering spectra of water confined in a nanoporous Gelsil matrix, with very small pore diameter (26??).
      
As the content of absorbent polymer increased, the porosity values decreased and mean pore diameter shifted to small pore diameter region.
      
The nitrogen adsorption-desorption analysis reveals that the prepared mesoporous silica possesses a small pore diameter of 3.68 nm, a total surface area of 363.648 m2/g, a total pore volume of 0.379 cm3/g, and a pore-wall thickness of 6.63 nm.
      
The small pore diameter for SBA-1 may be due to its cage-type pores constructed with small windows.
      
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