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     The results showed that, when the coal was mixed with biomass at mass ratio 1∶1, the rate of NO x conversion decreased 2%—33%, and the rate of SO x conversion decreased 10%—17%.
     结果表明 ,在试验用煤中加入生物质 (质量比为 1∶1)后 ,燃料NOx 转变率降低了 2 %— 33%. 燃料SOx 转变率降低了 10 %— 17%.
短句来源
     Sintering slag glass-ceramics was prepared by using at mass ratio of kaolin tailings (53.2%)from Beihai of Guangxi province, magnesium oxide (18.0%), aluminum oxide (16.0%), ceria(4.4%),and other oxides (8.4%).
     研究了以广西北海的高岭土尾矿为主要原料,采用烧结法制备矿渣微晶玻璃的可行性。 确定了制备堇青石微晶玻璃的配方(质量分数/%):尾矿53.2,氧化镁18.0,氧化铝16.0,氧化铈4.4,其它8.4。
短句来源
     The cardanol formaldehyde resin(CFR) emulsions with high stability were prepared with the mixture of α-olefin sulfonate (AOS) and styrene-acrylamide-acrylic ester copolymer (BAA) at mass ratio 3∶5 of AOS and BAA.
     用α-烯基磺酸钠(AOS)与苯乙烯-丙烯酰胺-丙烯酸酯共聚物(BAA)(质量比3∶5)的复配物为乳化剂制备了稳定性高的腰果酚醛树脂乳液。
短句来源
     The structures and amounts of the polymeric surfactants influenced greatly the emulsification results. The polymeric surfactant with mass ratio of styrene,acrylamide and monomer 3 at mass ratio 1∶0.6∶0.2 was a good emulsifier for the terpene resins(T-90,T-100,T-110). The amount of the surfactant used in the emulsification was 10%.
     高分子表面活性剂的结构极大地影响萜烯树脂的乳化结果,本研究中高分子表面活性剂苯乙烯-聚丙烯酰胺-单体 3(质量比 1∶0. 6∶0. 2)用量为 10%时能将萜烯树脂T-90、T-100和T-110乳化成稳定的乳液。
短句来源
     Sintering slag glass_ceramics was prepared by using at mass ratio of potash feldspar tailings(72%) from Shaxian of Fujian province, calcium carbonate(22.7%), and zinc oxide (5.3%), the glass was melted at 1 250 ℃ for 3 h.
     研究了以福建沙县的钾长石尾矿为主要原料 ,采用烧结法制备矿渣微晶玻璃的可行性 ; 确定了制备 β-硅灰石微晶玻璃的配方 :尾矿72 % ,碳酸钙 2 2 .7% ,氧化锌 (起助熔作用 ) 5 .3% (质量分数 ) ;
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     The main influencing factors on the CCMP conversion ratio are examined. The experimental results show that under 700 r/min stirring rate,reflux temperature 92 ℃,V(OH-)/V(CCMP)=5∶1,10%(wt) of alkali solution concentration,DMF 15%~ 30%(wt) against to CCMP,20%~25%(wt) better,the reaction time 6 h,the conversion ratio of CCMP can reach over 95%.
     考察了影响CCMP转化率的主要因素,结果表明,在搅拌速度700r/min,碱液浓度10%(质量分数),温度92℃,m(DMF)/m(CCMP)=0.15~0.30,最好0.20~0.25,V(OH-)/V(CCMP)=5∶1,反应时间6h条件下,CCMP转化率可达95%以上。
短句来源
     It is found that the optimum formulation(mass) is polyether polyols(average functionality ≈ 4) 100 parts,mixed delay catalyst YC-1 0.8 parts,water 0.6 ̄1.0 parts,physical foaming agent 5 ̄8 parts,foam stabilizer B8870 1.0 ̄ 2.0 parts; the isocyanate index is 1.05 ̄1.15;
     得出较佳配方(质量份)为:聚醚多元醇(平均官能度4左右)100,复配延迟催化剂YC-10.8,水0.6 ̄1.0,物理发泡剂5 ̄8,泡沫稳定剂B88701.0 ̄2.0,异氰酸酯指数1.05 ̄1.15;
短句来源
     The saturation sulfur capacity of CuY-135-500 type zeolite absorbent which was prepared under above optimum conditions for model gasoline could reached 8.61%(mass fraction) at the conditions of atmospheric pressure,room temperature and LHSV 10h1.
     在上述条件下制得的分子筛吸附剂对模型汽油在常压、室温、液体时空速为10 h-1时的饱和硫容量为8.61%(质量分数)。
短句来源
     When the mass fraction of elastomer such as ethylene-1-octene copolymer(POE),ethylene-propylene-diene copolymer(EPDM) or ethylene-vinyl acetate(EVA) was 15%,the notched impact strength of composite were 5.8,6.7,4.7 times of that of nylon 66 correspondingly,and the tensile strength of compounds were 109.32,99.30,85.46MPa respectively.
     当弹性体乙烯-1-辛烯共聚物(POE)、三元乙丙橡胶(EPDM)或乙烯-乙酸乙烯酯(EVA)的加入量为15份(质量)时,相应三元复合材料的缺口冲击强度分别为尼龙66的5.8,6.7,4.7倍; 拉伸强度分别为109.32,99.30,85.46 MPa。
短句来源
     When the mass fractions of PA 66,POE-g-MAH,GF were 65%,10% and 25% correspondingly,the impact strength and tensile strength of the composite were 268J/m and 130MPa respectively.
     当PA 66/POE-g-MAH/GF配比(质量份)为65/10/25时,该复合材料的缺口冲击强度为268 J/m,拉伸强度为130 MPa。
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     Quality.
     质量
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     QUALITY
     质量
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     Introduction to Test of Quality(1)
     质量检验综述(上)
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  at mass
Discovery of a narrow resonance state of the system KSKS at mass 1520 MeV
      
The sign of Tf3 is connected with the sign at mass terms in the modified Hamiltonian HFW.
      
On the other hand, dehydrated ammonium carnallite was mixed with the solid ammonium chloride at mass ratio 1 : 4 at high temperature and with the differential pressure of NH3 above 30.5 kPa.
      
Aside from the fragments of the OCS monomer and the van der Waals cluster fragments (OCS)2+ and (OCS)3+ signals at mass S2+, S3+ and S2OCS+ are detected.
      
Higher removal efficiencies (>amp;gt;90%) were achieved at mass loadings below 50.3 g/m3/h.
      
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In this paper the general synthesis problem of optimal control systems with the criterion of transient responses as a positive integral functional (3) is discussed.In the first part it is assumed that the motion of controlled object is described by a system of ordinary differential equations and that the final states of the system form a bounded and closed convex region in n-dimentional euclidian phase space. A method is proposed for finding all optimal control functions which lead any starting state into the...

In this paper the general synthesis problem of optimal control systems with the criterion of transient responses as a positive integral functional (3) is discussed.In the first part it is assumed that the motion of controlled object is described by a system of ordinary differential equations and that the final states of the system form a bounded and closed convex region in n-dimentional euclidian phase space. A method is proposed for finding all optimal control functions which lead any starting state into the given final region of states. Some conclusions are obtained from the maximum principle by using transversal conditions of optimal trajectories in terminal points, and the particular properties of the stated problem are pointed out. The case of linear dif-ferential equations with integral quadratic functional criterion is investigated in detail.Further, in the second part the fundamental properties of isoloss regions, the rela-tions between the isoloss region and optimal control functions are indicated. As a direct result a partial differential equation determining the optimal loss-function J (x) is found and the connection between function J (x)and optimal vector control function u (x) is also stated. The methods proposed are practically the extension of the me-thods used by us for designing time optimal control systems as seen in [5, 6 ,7].Finally, an example is illustrated with optimal trajectories shown in phase plane.The necessary numerical data is calculated by an analog computer with high accuracy.

文中研究了具有公式(3)表示的一般正积分泛函的最优控制系统的综合问题.在第一部分中研究了具有控制参数的一阶微分方程组.控制系统的终点状态为n维相空间内的某一逐段光滑边界的闭性区域Ω.文中指出了根据极大值原理和轨道终点的横截条件寻找引到Ω的所有最优轨迹的方法.这里详细地研究了具有二次泛函和被积函数中不明显含有控制参数的质量指标泛函的线性方程情况.在文中第二部分研究了等损耗区的主要特性.指出了等损耗区与最优控制函数之间的关系.导出了求算最优损耗函数J(x)的偏微分方程,以及这一函数与最优控制函数u(x)的关系.上述方法是我们曾在文献[5,6,7]中用过的最优快速系统的综合方法的推广.文章最后举有例证.

This paper presents an investigation of the"Automatic Operator" of Diesel Loco-motive based on the principle of compound programming control. According to the sur-rounding conditions of locomotive, the"Automatic Operator"can change its structure automatically in order to obtain better quality of control.In this paper, the principle scheme, the characteristics of"Automatic Operator" and the experimental results of automatic control of Diesel locomotive with "Automatic Operator"are presented, the principle and...

This paper presents an investigation of the"Automatic Operator" of Diesel Loco-motive based on the principle of compound programming control. According to the sur-rounding conditions of locomotive, the"Automatic Operator"can change its structure automatically in order to obtain better quality of control.In this paper, the principle scheme, the characteristics of"Automatic Operator" and the experimental results of automatic control of Diesel locomotive with "Automatic Operator"are presented, the principle and the design of logical circuit for changing the characteristics of"Automatic Operator"is emphasized. The latter part of the paper in-cludes a discussion of quality of control; and finally, formulas for determining the para-meters of the control system are derived.

文内介绍了采用复合控制原理和根据机车所处客观条件自动切换系统结构的内燃机车程序控制方案,介绍了按此方案制成的(自动司机)总体线路及其性能.介绍了利用这台控制机进行内燃机车自动驾驶的全面试验结果.文中着重讨论了自动切换系统结构的逻辑装置的设计计算.给出了综合这类系统参数的计算公式.此外,对系统的控制质量进行了详细讨论.

Equations determining the velocity and density distributions within the mixing region of two incompressible gases with different densities are set up, their temperatures being assumed to be the same. For incompressible mixing the total number of gas molecules per unit volume is constant, although the density of the gaseous mixture varies from point to point due to diffusion of matter. As an illustration we consider the plane jet and steady motion. The boundary layer method of approximation can still be applied....

Equations determining the velocity and density distributions within the mixing region of two incompressible gases with different densities are set up, their temperatures being assumed to be the same. For incompressible mixing the total number of gas molecules per unit volume is constant, although the density of the gaseous mixture varies from point to point due to diffusion of matter. As an illustration we consider the plane jet and steady motion. The boundary layer method of approximation can still be applied. The boundary of the jet is shown to be the same as that for one fluid. The solution of the problem then depends upon the numerical value of the coefticient of viscosity of the mixture which is a function of the number of molecules of each constituent gas in the unit volume. The present method of investigation is applicable to the cylindrical and half jets and also to the case where the two gases are at different temperatures.

本文求出规定二不能压缩气体的分片合流运动时,速度与质量密度分布的微分方程式。假定两种气体的密度不同但温度则相等。不能压缩的定义是每单位体积中的两种气体分子数的和不变。本文只讨论一平面守恒注中所需要的微分方程式。粘滞流体运动中之边界近似法仍可应用。同样方法亦可用到守恒圆柱体注,半注及气体中温度不同诸问题。

 
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