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cemented
相关语句
  胶结
     The recommended strength of cemented layer is Ri>1.7Mpa and R>2. 7-3. 2Mpa.
     推荐的胶结面层充填体强度为:R_3>1.7Mpa和R_7>2.7~3.2Mpa;
短句来源
     It was found that halite (NaCl) was closely cemented with soil particles, thenardite (Na_2SO_4) was transformed from mirabilite (NasSO_4·VlOH_2O) by dehydration, and the glanberite [Na_2Ca (SO_4)_2] was formed by calcium sulfate and sodium sulfate. These salt crystals separated were clear, without any mixture.
     扫描电子显微镜的照片,展示出某些盐类结晶的自然特征,它们是:与土粒胶结紧密的石盐(NaCl)、由芒硝(Na_2SO_4·10H_2O)脱水转变成的无水芒硝(Na_2SO_4)、或由硫酸钠、硫酸钙形成的复盐——钙芒硝Na_2Ca(SO_4)_2。
短句来源
     After comparison,the Gsec model of LSES is similar with those of sand and cemented sand,that is,Gsec-γd is hyperbolic and Gsec is linear to σ cn.
     通过比较发现,LSES与砂及胶结砂的Gsec衰减模型具有一定相似性,即Gsec与γd呈双曲线关系,与σc为指数关系。
短句来源
     The enhancement in oil recovery in cemented quartz cores with residual oil after water flood develops similarly by ① and ④ but the oil displacement efficiency of ① is 2 times as high as that of ④;
     在人造石英砂胶结岩心上提高水驱残余油采收率的规律,①与④相同,但①的驱油效率较④高一倍;
短句来源
     In cemented filling mining, cement is the traditional cementing material and takes 60 % ~ 80%of the total filling cost universally.
     在矿山胶结充填中,传统的胶结材料是水泥,一般占充填成本的60%~80%。
短句来源
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  硬质合金
     Research on Production Principle of Graded Cemented Carbide and Formation Mechanism of Gradient in Cemented Carbide
     梯度结构硬质合金的制备原理及梯度形成机理研究
短句来源
     THE BINDER PHASE COMPOSITION OF NON-MAGNETIC WC-10%Ni CEMENTED CARBIDE CONTAINING SMALL AMOUNT OF Cr(Cr_3C_2)、Mo(Mo_2C) or Ta(TaC)
     少量添加Cr(Cr_3C_2)、Mo(Mo_2C)、Ta(TaC)的WC-10%Ni系非强磁性硬质合金粘结相的组成
短句来源
     BENDING LOAD-DEFLECTION CURVES IN WC-Co CEMENTED CARBIDE
     WC-Co硬质合金弯曲载荷-挠度曲线
短句来源
     DIFFRACTION CONTRAST STUDY ON MICROSTRUCTURE AND DEFORMATION PROCESS OF WC-Co CEMENTED CARBIDE
     WC-Co硬质合金的微观结构与形变过程的电子衍衬研究
短句来源
     On the Preparation of TEM Specimens for Bonding Layers of Cemented Carbide GT35 and YG8 and the Observation of their Microstructures
     GT35和YG8硬质合金渗硼层的透射电镜样品制备及显微组织的观察
短句来源
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  胶结的
     Study on the Influencing Factors of Fe-oxides Cemented with Kaolinite and Their Suface Properties
     氧化铁与高岭石胶结的影响因素及其表面性质研究
短句来源
     It always contains fractures、 poorly cemented or non-cemented fracted zone in real formations, moreover, some fractures are induced during drilling, so the formation around the well is not continuous.
     实际地层本身含有裂缝、胶结差、甚至无胶结的破碎带,再加上钻井过程中的诱导裂缝,井眼周围的地层并不是连续的。
短句来源
     The reservoir sandstones in the Kongdian Formation went through two diagenetic stages and five diagenetic substages, and six diagenetic phases, of which the slightly compacted and moderately cemented DRF1-type reservoirs have the best reservoir quality, the moderately compacted and highly cemented DRF4-type reservoirs worst;
     成岩综合系数可以定量表征各种成岩作用的综合效应。 利用视压实率与视胶结率作交会图 ,结合成岩综合系数与孔隙度 ,可以将孔店组储层划分为六种成岩相 ,其中以弱压实中胶结的DRF1型储集性为最好 ,中压实强胶结的DRF4型储集性最差。
短句来源
     subordinately come the moderately compacted and moderately cemented DRF3-type reservoirs in the Kongdian Formation, intensely compacted and moderately cemented DRF5-type reservoirs in the middle submember of the second member of the Kongdian Formation, and slightly compacted and moderately cemented DRF1-type reservoirs in the lower submember of the first member of the Kongdian Formation.
     潍北油田孔店组储层主要属中压实中胶结的DRF3型 ,其次是孔二中亚段发育的强压实中胶结的DRF5型与孔一下亚段发育的弱压实中胶结的DRF1型 ,局部出现其它三种类型的成岩相。
短句来源
     In addition,the gravel layer partially cemented by calcium carbonate shows that there existed a period of cold and dry climate between the Late Pleistocene and the Early Holocene.
     下部埋藏阶地的砂砾石层被钙质胶结的现象表明,该地区在二级阶地形成后有一段气候干燥而寒冷的时期。
短句来源
  “cemented”译为未确定词的双语例句
     Effects of Rare Earth Elements on Properties and Structure of WC-14TiC-8Co Cemented Carbide
     Effects of Rare Earth Elements on Properties and Structure of WC-14TiC-8Co Cemented Carbide
短句来源
     Effect of Adding Rare Earth Element on Cemented Carbide YT14 by Digital Image
     Effect of Adding Rare Earth Element on Cemented Carbide YT14 by Digital Image
短句来源
     Properties of WC-8(Fe, Co, Ni)RE Cemented Carbide
     WC-8(Fe,Co,Ni)RE合金性能研究
短句来源
     STUDY ON WC-20 %Co CEMENTED CARBIDES ADDED WITH ZrO_2
     WC-20%Co添加陶瓷颗粒ZrO_2的试验研究
短句来源
     THE INDUSTRIAL EXAMINE OF WC-Ni/Co AND WC-Fe/Ni/Co CEMENTED CARBIDE FOR ROCK DRILLING
     WC-Ni/Co、WC-Fe/Ni/Co新型凿岩合金的工业考核
短句来源
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  cemented
Rates of propagation and decay of weak discontinuities of stress and pressure in a saturated, arbitrarily cemented porous medium
      
The possibility of testing cemented and nitrated layers of steel products by a probe with equidistant potential electrodes is investigated.
      
The probe is optimized with respect to the minimum of errors in the determined parameters with reference to homogeneous cemented and nitrated layers.
      
Effect of laser quenching and subsequent heat treatment on the structure and wear resistance of a cemented steel 20KhN3A
      
Interface bond mechanisms of ceramic-cemented carbide compact insert
      
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In the previous paper,we have mentioned that the activity of the granular catalysts for hydrocarbon synthesis decreases with time during the reaction carried out at lower temperature and higher space velocity.This was resulted,as we observed,from plugging up of the pore volumes of the catalyst by the high-boiling syntheic products,and the reaction controlling step changes from the kinetic one into an internal diffusion process thereafter.Therefore,it is reasonable to infer that by using the catalyst of proper...

In the previous paper,we have mentioned that the activity of the granular catalysts for hydrocarbon synthesis decreases with time during the reaction carried out at lower temperature and higher space velocity.This was resulted,as we observed,from plugging up of the pore volumes of the catalyst by the high-boiling syntheic products,and the reaction controlling step changes from the kinetic one into an internal diffusion process thereafter.Therefore,it is reasonable to infer that by using the catalyst of proper macro-pore structures enables one to prolong the time for plug- ging up the catalyst pores,and a high durability of catalytic activity may be expected. This paper discussed mainly the different ways for preparation of the suitable macro-pore granular catalysts such as particle,pelleted,cemented,sintered and enveloped catalyst,and the results of their durabilities tests were given.For a granular catalyst,the porosity of macro-pores and the mechanical strength are usually contradicted with each other.Among those methods mentioned above,only sintered and enveloped catalysts could meet the requirements both in mechanical strength and porosity.It was also shown in our tests that those catalysts having more porous struc- tures proved to be much better result in durability of catalytic activities,such as using sintered granular catalyst of 362-type fused iron catalyst for Fischer-Tropsh synthesis at 15 atm.,240—250° and with space velocity of 500(hr)~(-1),a 85% CO conversion obtained for 40 days duration with or without catalyst regeneration by solvent extraction.These results suggested the possibility of the application of granular fused iron catalyst for high space velocities synthesis in fixed bed.

前报指出:应用氮化熔铁颗粒催化剂在高空速下进行合成时,由于重质产物堵塞了颗粒孔隙,反应由原为表面化学反应控制转为内扩散控制的慢反应,因而产生了活性随时间而下降的现象.改变催化剂的孔隙结构,延缓重质产品堵塞孔隙的时间,是解决活性维持的方向之一.本文着重讨论了关于催化剂成型方法的研究结果.如欲增大颗粒催化剂的孔隙率,往往与强度发生矛盾.在详细研究了影响强度与孔隙的关系后指出:在所试验的五种成型方法中(大颗粒,粘合,压片,烧结及包饀),烧结及包饀两种方法能同时满足强度与孔隙的要求.试验证明:由成型方法所构成的大孔,减轻了重质产品的堵塞作用,从而有效地延缓了活性下降的时间,在无回流操作下,应用362型催化剂,在15气压,240-250°,空速500时~(-1)结合油洗再生,顺利进行了40日以上的寿命试验.因而对于熔铁催化剂用于高速固定床的问题获得初步结果,提出了它应用的可能性.

The crystal structure of prehnite has an orthorhombic unit ceil with α=4.64 ,b=5.50 and c=18.4 ,which contains 2{Ca_2Al_2Si_3O_(10)(OH)_2}.The space group isThe trial structure was derived from Patterson functions by means of spacegroup theory and crystal-chemical considerations.It was then confirmed andrevised by Fourier projections ρ(x,z)and p(y,z).The structure of prehnite consists of ions Ca~(2+),Al~(3+),OH~- and[Si_3AlO_(10)]_n~(5n-).The ions[Si_3AlO_(10)]_n~(5n-) have a peculiar layer structure,whose...

The crystal structure of prehnite has an orthorhombic unit ceil with α=4.64 ,b=5.50 and c=18.4 ,which contains 2{Ca_2Al_2Si_3O_(10)(OH)_2}.The space group isThe trial structure was derived from Patterson functions by means of spacegroup theory and crystal-chemical considerations.It was then confirmed andrevised by Fourier projections ρ(x,z)and p(y,z).The structure of prehnite consists of ions Ca~(2+),Al~(3+),OH~- and[Si_3AlO_(10)]_n~(5n-).The ions[Si_3AlO_(10)]_n~(5n-) have a peculiar layer structure,whose plane is parallel to(001).Adjacent layers are cemented together by Al~(3+)ions,which are octahedrallycoordinated by 4 o atoms and 2 OH groups.The layers[Si_3AlO_(10)]_n~(5n-)are actuallysheet frameworks of finite thickness,which have been mentioned by W.H.Taylorin a discussion regarding the structure of heulandite.In the light of.this structure model,all known properties of prehnite can b~eunderstood.

葡萄石的组成为 Ca_2Al_2Si_3O_(10)(OH)_2。晶体的 Laue 对称性确定为 D_(2h)。正交晶胞的参数为α=4.64(?),b=5.50(?),c=18.4(?)。晶体的密度为2.925克/厘米~3。正交晶胞中当含有2{Ca_2Al_2Si_3O_(10)(OH)_2}。晶体的可能空间群为 D_(2h)~7-Pncm 或 C_(2v)~6-Pnc2。为推引正离子在晶胞中各种可能的分布方式,计算若干 Patterson 函数,然后逐步按照对称性、空间考虑以及硅酸盐的其他晶体化学特点,对正离子和负离子的位置作出安排,从而取得到一合理的试用结构。这个结构具有 D_(2h)~7的对称性。最后,按照这个模型计算电子密度分布函数ρ(x,z)和ρ(y,z)。计算结果肯定试用结构。葡萄石结构系由 Ca~(2+),Al~(3+),OH~-和[Si_3AlO_(10)]_(?)~(5(?)-)等离子组成,其中层型硅氧骨干系与(001)面平行,相隣的骨干通过离子 Al~(3+)得以结合。在这结构中,离子 Al~(3+)有两种配位型式,一半在四面体中,另一半在4个氧原子和2个氢氧基组成的八面体中。离子Ca~(...

葡萄石的组成为 Ca_2Al_2Si_3O_(10)(OH)_2。晶体的 Laue 对称性确定为 D_(2h)。正交晶胞的参数为α=4.64(?),b=5.50(?),c=18.4(?)。晶体的密度为2.925克/厘米~3。正交晶胞中当含有2{Ca_2Al_2Si_3O_(10)(OH)_2}。晶体的可能空间群为 D_(2h)~7-Pncm 或 C_(2v)~6-Pnc2。为推引正离子在晶胞中各种可能的分布方式,计算若干 Patterson 函数,然后逐步按照对称性、空间考虑以及硅酸盐的其他晶体化学特点,对正离子和负离子的位置作出安排,从而取得到一合理的试用结构。这个结构具有 D_(2h)~7的对称性。最后,按照这个模型计算电子密度分布函数ρ(x,z)和ρ(y,z)。计算结果肯定试用结构。葡萄石结构系由 Ca~(2+),Al~(3+),OH~-和[Si_3AlO_(10)]_(?)~(5(?)-)等离子组成,其中层型硅氧骨干系与(001)面平行,相隣的骨干通过离子 Al~(3+)得以结合。在这结构中,离子 Al~(3+)有两种配位型式,一半在四面体中,另一半在4个氧原子和2个氢氧基组成的八面体中。离子Ca~((?)+)则处在5个氧原子和2个氢氧基形成的配位中。葡萄石中[Si_3AlO_(10)]_n~(5n-)的结构型式与一般层型硅氧骨干不同,实际上是一种层型骨架。在上述结构模型的基础上,葡萄石的组成和性能已可得到充分阐明。

This paper pressents a discussion on the subject based upon the concept of the cemented granular structure of the concrete. It is shown that the effect of infiltrating water through the concrete consists of three types of forces: 1) the buoyant force, 2) the hydrodynamic force, and 3) the surface force.A thorough investigation of the stresses in a gravity dam subject to infiltrating water includes the above mentioned forces. In the geometric method of stress analysis, these forces can be taken into account...

This paper pressents a discussion on the subject based upon the concept of the cemented granular structure of the concrete. It is shown that the effect of infiltrating water through the concrete consists of three types of forces: 1) the buoyant force, 2) the hydrodynamic force, and 3) the surface force.A thorough investigation of the stresses in a gravity dam subject to infiltrating water includes the above mentioned forces. In the geometric method of stress analysis, these forces can be taken into account more convinently in the equations of equilibrium of the block.However, in the modern design of a concrete gravity dam, a less permeable layer and a drainage system are installed close to the upstream face of the dam. These make the seepage line lower inside the dam and the hydrodynamic force insignificant. Under this condition, the application of the method of gravity analysis, in which the water pressure is considered to be acting on the upstream face of the dam and the uplift of seepage water is aken to be an external force, will not bring in considerable error.With the same point of view, this paper further analizes and investigates the principal stress parallel to the upstream face of the modern concrete gravity dam and shows that, the well-known formula still gives a better approximation and lies on the safe side.

本文首先略述近若干年来考虑混凝土壩壩內渗透压力作用的设计假定及存在问题乇鹬赋隽芯S条件的不合理性,并指出目前某些規范要求部分滿足列維条件也是根据不足的。由于壩身混凝土是由骨料顆粒經水泥結石胶結而成的不均質多孔固体,当水透入混凝土时能产生以下三种作用力: ①浮力W_(BZB)=γ_B(n_s-n_v),力的方向鉛直向上; ②渗透动压力W_Φ=γ_BJn_s,力的方向与流线相切; ③表面作用力pΦ=p(1-n_s),力的方向垂直于壩面。正確的考虑渗透压力作用的壩身应力的計算必須包括上述这三种力。当用“小块法”計算霸身应力时,将它們考虑进去并没有什么困难。就力的性質来說,在霸內分布的浮力及渗透动压力都是体积力,在下游壩体內的渗透动压力的水平分量极易引起拉应力,对霸内应力十分不利。文中并指出:由于現代修建的混凝土壩在其上游面矷栌锌股炷敛慵芭潘苣?霸內等水头綫向上游密集;排水管后壩体的浸潤綫限低,浸潤线下的孔隙水压力也常很小,因此按照通常“重力分析法”認为外水压力作用在壩面,并将揚压力靦为外力,所算得的壩身应力分布并没有很大的誤差。最后,根据同样的論点,对于近年来国內爭論較多的上游壩面主应力的計算问题作了分析,...

本文首先略述近若干年来考虑混凝土壩壩內渗透压力作用的设计假定及存在问题乇鹬赋隽芯S条件的不合理性,并指出目前某些規范要求部分滿足列維条件也是根据不足的。由于壩身混凝土是由骨料顆粒經水泥結石胶結而成的不均質多孔固体,当水透入混凝土时能产生以下三种作用力: ①浮力W_(BZB)=γ_B(n_s-n_v),力的方向鉛直向上; ②渗透动压力W_Φ=γ_BJn_s,力的方向与流线相切; ③表面作用力pΦ=p(1-n_s),力的方向垂直于壩面。正確的考虑渗透压力作用的壩身应力的計算必須包括上述这三种力。当用“小块法”計算霸身应力时,将它們考虑进去并没有什么困难。就力的性質来說,在霸內分布的浮力及渗透动压力都是体积力,在下游壩体內的渗透动压力的水平分量极易引起拉应力,对霸内应力十分不利。文中并指出:由于現代修建的混凝土壩在其上游面矷栌锌股炷敛慵芭潘苣?霸內等水头綫向上游密集;排水管后壩体的浸潤綫限低,浸潤线下的孔隙水压力也常很小,因此按照通常“重力分析法”認为外水压力作用在壩面,并将揚压力靦为外力,所算得的壩身应力分布并没有很大的誤差。最后,根据同样的論点,对于近年来国內爭論較多的上游壩面主应力的計算问题作了分析,認为对于現代修建的混凝土壩,由于在其上游面有可靠的排水和防渗层,通常用N′_1=(σ′_Y-pcos~2α)/sina~2α計算上游霸面主应力仍是比較适宜,而且是偏于安全的。

 
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