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  a 3
     When the excited wavelength is at 870nm (3.34×10 14 Hz),a three times frequency scattering peak at 290nm (3×3.34×10 14 Hz) and a 3/2 fraction frequency scattering peak at 580nm (3/2×3.34×10 14 Hz).
     当激发波长为 870 nm(3.34× 1 0 14 Hz)时在 580 nm(3/2× 3.34× 1 0 14Hz)和 2 90 nm(3× 3.34× 1 0 14 Hz)分别产生一个 3/2分频和 3倍频散射峰 .
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     A 3×3 Matrix Spectral Problem and Its Darboux Transformation
     一个3×3矩阵谱问题及其Darboux变换
短句来源
     The Darboux Transformation of a 3×3 Spectral Problem and the Explicit Solution for Modified Boussinesq Equation
     一个3×3谱问题的达布变换及Modified Boussinesq方程的精确解
短句来源
     The Darboux Transformation of a 3×3 Matrix Spectral Problem
     一个3×3矩阵谱问题的达布变换
短句来源
     A 3/2 fraction frequency scattering peak at 580nm (3/2×3.34 ×10 14 Hz) and a three time frequency scattering peak at 290nm (3×3.34×10 14 Hz) displayed as the λ ex =870nm (3.34×10 14 Hz).
     当激发波长为 870 nm( 3 .3 4× 1 0 14 Hz)时在 580 nm( 3 / 2× 3 .3 4× 1 0 14 Hz)和 2 90 nm( 3× 3 .3 4× 1 0 14 Hz)分别产生一个 3 / 2分频和 3倍频散射峰 .
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  “一个3”译为未确定词的双语例句
     A 3-Dimensional Reducible Representation of D_3 Point Group
     D_3点群的一个3维可约表示
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     A Design of 3-bit Flash ADC Core
     一个3位flash ADC核的设计
     The two segments of MABV genome include a segment A of 3.1 kbp and a segment B of 2.8 kbp.
     MABV基因组的两个片段包括一个3.1kb的A片段和2.8kb的B片段。
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     Let F be a field of 3k elements and s3+ax2+bx+c=0 be the cubic equation over the field F.
     F是一个3k元域,x3+ax2+bx+c=0是F上的三次方程。
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     The paper introduces a process of 3 1/2 bite digital voltage using double-integral style A/D transform 5G14433chip as the core.
     介绍了选用双积分型A/D转换器5G14433芯片为核心设计组装一个3(1/2)位数字电压表的实现过程。
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     The period of treatment was 3 d for each group.
     3 d为一个疗程。
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     irst time, the analytical wavefunctions in SU(3) limit.
     (3)。 (?)
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     3. Distribution of Y - STR haplotype in Han, Tibetan and Japanese PopulationA.
     ·3·
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     Another is in J 2? J 3(!)
     另一个是J2 —J3 ( !)
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  a 3
Finally the cubic surfaces of each component ofQ are studied in details by determining their stabilizers, their rational representations and whether they can be expressed as the determinant of a 3×3 matrix of linear forms.
      
We establish convolution and Fourier restriction estimates for a measure on a 3-
      
Later steric and electrostatic fields were determined across a 3D grid.
      
Their cytotoxic properties were determined by a 3-day continuous exposure MTT assay with murine melanoma B16 cells.
      
Let M be a 3 X 3 matrix and d(M) is the distance to the diagonal algebra.
      
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In ordinary sampled-data control systems the system response to a step input can reach its equilibrium state only within n or more sampling intervals (n is the order of the controlled plant). In this paper multiple-impulses are used, instead of ordinary simple impulses, to speed up the system response. In such sampled data systems the system response to step input can reach its equilibrium state within less than n, even one, sam-pling intervals. Methods of design of such kind of sampled-data systems and their...

In ordinary sampled-data control systems the system response to a step input can reach its equilibrium state only within n or more sampling intervals (n is the order of the controlled plant). In this paper multiple-impulses are used, instead of ordinary simple impulses, to speed up the system response. In such sampled data systems the system response to step input can reach its equilibrium state within less than n, even one, sam-pling intervals. Methods of design of such kind of sampled-data systems and their com-ponents are discussed. In the last part of the paper methods of compensating sampled data systems with dead time elements is also considered.

在通常的脉冲控制系统中,当输入信号是阶跃函数时,系统的过渡过程至少在n个采样周期内才能完全结束(n是控制对象的阶数).文中考虑了采用宽度不等的多拍脉冲代替通常的单拍脉冲以加快系统的过渡过程.在采用多拍脉冲以后,系统的过渡过程可以在少于n个采样周期内,甚至在一个采样周期内完全结束.文中叙述了这种脉冲系统的综合方法,也讨论了系统中有关组成部分——脉冲组成器和校正装置——的构成方案及其参数的计算方法.最后并考虑了由于时滞引起的对系统动态特性有害影响的补偿问题.文中举有例题,对文中各节内容作必要的说明.

In this paper the logical structure of contactless telemechanical system for distributed objects is discussed. A simple method of variable system structure for transmitting and receiving telemechanical information is adopted. The idea is that the information oc-curred in every controlled point (station) and the information of some of those objects,which frequently change their states, are transmitted continually and cyclically, while for other objects their information is transmitted only after any change in...

In this paper the logical structure of contactless telemechanical system for distributed objects is discussed. A simple method of variable system structure for transmitting and receiving telemechanical information is adopted. The idea is that the information oc-curred in every controlled point (station) and the information of some of those objects,which frequently change their states, are transmitted continually and cyclically, while for other objects their information is transmitted only after any change in their states. Thus,the speed of operation will be increased, and also the error probability of system syn-chronization will be decreased. For the realization of the variable logical system struc-ture, several blocks are used repetitively. For example, two commutators and one sim-ple logical unit are used to construct a simple automatic sequential encoder, and at the same time, the two commutators are used also to operate as a matrix commutator for receiving telesignalling information etc. Therefore the system is comparatively simplified and attains a higher degree of "minimization".

本文研究了无触点集中-分散目标远动系统的逻辑结构.文中提出了采用简单的系统变结构来发送和接收信息的逻辑结构方式.对被控制点及一部分比较重要或变化比较频繁的被控制目标的信息,保留了循环传送,而对大部分变化比较慢的被控制目标则采用目标有变化时才传送信号的方式,这样就提高了系统的平均动作速度,同时也减小系统的失步概率.文中采用环节的复合利用及简化的逻辑单元线路来实现这种系统的逻辑结构.例如用两个分配器和一个简单的逻辑单元“和”线路组成了很简化的选点自动程序编码器,同时这两个分配器又复合利用兼组成目标信号接收矩阵式分配器等,因而可以使得这种系统同时又具有较高的极简化度.

Analysis of the low frequency response of automatic balancing D-C amplifier with mechanical chopper is illustrated by a typical circuit in this paper. The analysis of dynamic response of the modulation and the demodulation circuits and the auxiliary carrier wave amplifier have been considered more in details. The analysis is based on solving difference equations since the intrinsic working process behaved by the M-D M circuits using mechanical chopper is more accurately described by difference equation other...

Analysis of the low frequency response of automatic balancing D-C amplifier with mechanical chopper is illustrated by a typical circuit in this paper. The analysis of dynamic response of the modulation and the demodulation circuits and the auxiliary carrier wave amplifier have been considered more in details. The analysis is based on solving difference equations since the intrinsic working process behaved by the M-D M circuits using mechanical chopper is more accurately described by difference equation other than by differential equations.

本文結合一个典型线路对带有机械振子的自动稳零直流放大器的低頻特性,进行了分析,并且着重分析了調制解調輔助放大器对緩变信号的频率响应。所用方法是差分方程求解法,因为用差分方程来描述具有机械振子的調制解調线路的固有工作过程,要比用相同的初始条件的微分方程来描述更为准确。文中推导出調制及解調綫路的調制系数k_M、解調系数k_(ДM)以及它們的传递函数。此外,对放大調制波的阻容耦合放大器也进行了分析。分析結果說明,如果放大器耦合迴路的参数选择得合理吋,則此放大器对緩变信号的調制波可作为理想放大器来处理。文中所得結果可作为設計該类型放大器时选择参数的参考。此外,本文对于采用自动稳零直流放大器作运算放大器时可能产生的持續低頻自激振蕩問題,也进行了討論。

 
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