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匹配条件的英文

  • match condition
  • matched conditions
  • matching condition

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  • 例句与用法
  • To increase the rate of hitting the grade of liquid steel based on match between converter and continuos caster in capacity is considered as a promising way to improve process control and make production cost - efficient at steel making division . based on lgmis and the model of process - control of converters , the factors , which impact to the hit ratio of grade of liquid steel , have been investigated in details . the influence of quality and availability of primary raw materials , such as hot metal , semi - steel and mixture hot metal and semi - steel , on quality of liquid steel has investigated
    本文结合攀钢转炉炼钢工艺现状及全连铸对钢水质量的要求,从改进炼钢过程质量控制的角度,以转炉连铸机炉机匹配条件下提高钢种炼成率为目标,在现有lgmis系统和转炉炼钢过程静态控制模型的基础上,详细分析了攀钢转炉炼钢的钢种炼成率以及影响攀钢转炉炼钢的钢种炼成率的因素,分析了转炉炼钢主原料(铁水、半钢、混合铁水)的质量和物流条件对攀钢炼钢过程质量的影响,提出了通过控制转炉炼钢主原料质量和物流条件改进炼钢过程质量控制的策略。
  • The waves should be sheared waves for the anisotropic aeo device and longitudinal waves for the isotropic aeo device . geometrical relationships of anisotropic acousto - optic effect in ln crystal and kdp crystals are studied by tangent - match condition . curves of incident angle vs . abaxial angle , diffractive angle vs . abaxial angle , extreme frequency vs . abaxial angle and acousto - optic merit vs . incident angle vs . abaxial angle are systematically gained and the design parameters are also calculated
    利用相切-匹配条件法研究了铌酸锂晶体及kdp晶体的反常声光互作用几何关系,系统地得到了以离轴角为自变量的各参数的计算公式及相应的关系曲线,通过数值分析方法给出了声光优值随中心频率的变化曲线并给出了器件的设计参数。
  • We analyze the generation of external cavity frequency - doubling with knbo3 crystal theoretically . in order to get the second - order nonlinear conversion from 858nm to 429nm with knbo3 , we use non - critical type - i phase - matching to avoid the walk - off effect the corresponding optimum focusing condition is as followings : double refraction parameter b = 0 , focus parameter = 2 . 84 , optimum phase mismatch parameter = 0 . 574 . based on the theoretical analysis and numerical calculations , we obtain the ideal nonlinear conversion coefficient about 1 . 45 % / w with crystal length of 7mm and 2 . 07 % / w with crystal length of 10mm at the phase - matching temperature around 23 . 50c
    根据对其倍频原理及性能的分析讨论,在用该晶体完成波长从858nm到429nm的二阶非线性转换时,采用非临界相位匹配条件(此时无离散效应,对应的双折射参数b = 0 ,共焦长度为= 2 . 84 ,最佳相位失配因子为= 0 . 574 ) ,在相位匹配温度约为23 . 5时,理论上通过计算得到理想情况下非线性转换系数约为1 . 45 / w (长度为7mm ) , 2 . 07 / w (长度为10mm ) 。
  • The phase matching and group velocity matching conditions of type - i and type - ii second harmonic generation ( shg ) are obtained according to the momentum and energy conservation laws . the group velocity delay of ultrashort pulse shg on clbo and the crystal length decided by the group velocity delay are analyzed and compared with bbo ' s
    从动量守恒、能量守恒出发推导得出了超短脉冲倍频的类、类相位匹配和群速匹配条件,对clbo晶体用于超短脉冲倍频时的群速延迟以及由群速延迟决定的晶体长度进行了分析和数值模拟,并与bbo晶体进行了比较。
  • According to the radar - absorbing model , the performance of rams of various absorber - volume - percentage with various frequency and the radar obsorbing performance of which in various thickness is predicted . according to the radar - absorbing model , the prerequisites of microwave electromagnetic parameters and the border curves for a single - layer homogeneous absorbing coating backed by a perfectly conducting plate to produce zero specular reflection are obtained by the steffensen speedup approach to solve the complex transcendental equation
    以吸波模型为依据,用计算机求解了单层均匀各向同性吸波材料的阻抗匹配条件,通过数值模拟得到了吸波材料阻抗匹配时电磁参数边界曲线的数值模拟等式和阻抗不匹配时宽带吸波材料电磁参数的合理搭配规则和频散特性。
  • In view of the fact that there are three types of a hybrid base - bleed - rocket extended - range projectile and they are different from each other in the general structural layout , their structural characteristics and the work performance of the two propellant units is analyzed in this paper
    本文针对三种总体结构布局形式不同的底排?火箭复合增程弹,分析了它们的结构特点和底排装置、火箭装置的工作特性,详细讨论了复合增程弹底排?火箭工作时序选择对弹道特性的影响以及实现理论上最佳弹道的匹配条件
  • The main idea under controller design is damping model nonlmearities with control input to force the system dynamic into a linear sliding surface and utilizing dynamic filters to ensure the boundedness of states , inputs and outputs . the mismatched model uncertainties are suppressed with extra items in control input
    Dsc控制器通过对消系统非线性项,将系统动态驱至线性滑模态;引入动态滤波器,确保系统的状态及输入输出有界,同时避免了对非线性模型多次求导带来的复杂性;在虚拟控制输入中利用附加项来克服不满足匹配条件的不确定性。
  • Third , this dissertation analyzes the complicacy of result size estimation problem for xml structure based query optimization compared to its counterpart in traditionally relational database , and proposes a full - featured result size estimation algorithm for xml query , sxm . for simple path expression query , this dissertation proposes a dynamic synopsis model for xml data based on the concept of f - stable and b - stable , xmap . for complicated path expression query , this dissertation adopts an improved bifocal sampling method for result size estimation
    第三,分析了xml结构化查询优化中的查询代价估计问题与传统关系型数据库中的查询代价估计问题的区别,提出了一套完整的xml结构化查询代价估计体系sxm ,包括对简单路径表达进行查询代价估计的动态xml数据统计模型xmap ,对复杂路径表达进行查询代价估计的双焦点例举法,以及对值匹配条件进行查询代价估计的基于小波的多维直方图方法,并能将多种查询表达的查询代价估计结果结合在一起,以给出一个完整的xpath查询的代价估计。
  • Abstract : the conventional variable structure control technique for uncertain system requires that the uncertainty bound is known as a premise to assure robustness . the requirement creates an over - conservative controller and enlarges chattering . the proposed controller regards the influence of unknown disturbances and parameter uncertainties as an equivalent disturbance and generates an on - line estimation used in smc to cancel the slowly varying uncertainties by the mechanism of time delay . the reaching law approach is used to get the conditions and band of quasi - sliding mode . the new methodology offers a robust feedback control with much lower gains and reduces chattering without a prior knowledge of the uncertainty bounds or matched conditions
    文摘:常规变结构控制用于不确定系统,须利用不确定性界确保系统的鲁棒性,控制器过于保守且抖振变大.本文把未知干扰和参数不确定性的影响等效为名义系统的外界干扰,利用时延技术对干扰进行在线估计,并将估计值引入到变结构控制中,从而抵消掉系统中的慢变不确定性,利用离散趋近律法,推出了准滑动模态的存在条件及其带宽.该方法克服了以往控制方法中须已知不确定性界的限制,且不必满足匹配条件,用较低的控制增益保证了系统的鲁棒性,降低了准滑动模态带即削弱了抖振
  • The tuning curve of type - i phase matching of bbo opo are measured with accuracy ; the maximum conversation in total of the system is about 31 % at 615 . 6 nm , and it is fitted well with the gtp formula ; in the end we compared the output linewidth and unstable cavity far field beam qua lity of the bbo opo under the condition of type - i phase matching and type - ii phase matching , it is proved that we can obtain the parametric output of linewidth less than 0 . 3 nm and the beam divergence angle approaching diffraction limits by take the advantages of type - ii phase matching and unstable cavity designs
    测量了该系统的转换效率最大为31 ,并能与理论公式极好地吻合,最后比较了在类相位匹配条件下和类相位匹配条件下的bbo - opo的输出线宽,以及非稳腔的远场光束质量,实验结果表明,利用类相位匹配以及非摘要稳腔设计可以获得线宽小于0 3nlm 、光束发散角接近衍射极限的参量光输出。
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Last modified time:Mon, 11 Aug 2025 00:29:56 GMT

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