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the errors
相关语句
  误差
     A Study on the Errors Existing in Measurement and Reconstruction of Nearfield Planar Acoustic Holography
     近场平面声全息的测量和重构误差研究
短句来源
     Effect of coupling gap for prism-film couplers on the errors of film parameters
     棱镜—薄膜耦合器的耦合间隙对薄膜参数测量误差的影响
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     TO ANALYSE THE ERRORS OF THE USNO'S ABSOLUTE PARALLAXES BY MEANS OF DISTRIBUTION CURVE FITTING
     用分布曲线拟合方法对USNO绝对视差系列作的误差分析
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     The Measuring Accuracy of the Errors Separation Technique by Using the Reversal Method
     反向法误差分离技术的测量精确度
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     The Results of Monitoring the BPL Ground—waves Signals dy Guangzhou Satellite Station and A Discussion About the Errors
     广州人卫站对BPL地波信号的监测结果及其误差讨论
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  “the errors”译为未确定词的双语例句
     THE ERRORS ESTIMATION OF THE CHEBYSHEV SPECTRAL-DIFFERENCE METHOD FOR TWO-DIMENSIONAL VORTICITY EQUATION
     THE ERRORS ESTIMATION OF THE CHEBYSHEV SPECTRAL-DIFFERENCE METHOD FOR TWO-DIMENSIONAL VORTICITY EQUATION
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     the diophantine equation x~6+y~6=2z~2,(x,y)=1 has only integer solution (x~2,y~2,z~2)=(1,1,1),thereby correctes the errors in document[1].
     方程x6+y6=2z2,(x,y)=1仅有整数解(x2,y2,z2)=(1,1,1). 从而更正了文献[1]中的错误.
短句来源
     The main types of the errors were:the wrong methods of data analyzing for 61.76%,diagram error for 14.71%,non-statistical dealing for 8.82%,the mixture of rate and ratio for 8.82%,and the other error for 5.88%.
     主要错误类型及构成依次为:资料处理方法不当占61.76%,图表错误占14.71%,未作统计学处理占8.82%,率、比混淆占8.82%,其他错误占5.88%。
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     and the sum of intensity ratio of ten peaks and TiO_2 y, are as follows, respectively, X_B=17.41Y_B+2.14 X_P=14.43Y_p+15.69 both of which are highly significant at the level of x=0.01 and the errors from which are less than 5%.
     因结晶度和密度的差异,对于B_2O_3和Ca_3(PO_4)_2稳定的β-C_2S,其含量X和峰强比y之间的回归方程分别为: X_B=17.41Y_B+2.14 X_P=14.43Y_P+15.69
短句来源
     The results of investigation show that the errors of the TWPTs are dependent on the different combinations of one λ/2 and two λ/4, and according to the accuracy of TWPTs, λ/4+λ/2+λ/4 is the best, λ/2+λ/4+λ/4 is better and λ/4+λ/4+λ/2 is good.
     研究结果表明,三波片不同的组合方式对偏振态的变换精度有影响。 其中,λ/4+λ/2+λ/4组合具有最高的偏振变换精度,λ/2+λ/4+λ/4次之,λ/4+λ/4+λ/2的最差;
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  相似匹配句对
     errors.
     d. 随机误差。
短句来源
     d. errors.
     d误差。
短句来源
     The errors of i are equal.
     误差对每个yi都是相等的。
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     On the Errors of the Echo Sounder
     回声测深仪误差初论
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  the errors
The errors estimation of the Chebyshev spectral-difference method for two-dimensional vorticity equation
      
We vigorously analyse the errors produced by initial errors and boundary value errors.
      
To assume that the errors have the finite moment of order 2 only.
      
The errors of the model are quite close to the experimental errors.
      
Here, the random surface error is defined as the error of the standard reflector in its normal direction and the errors in a small zone of the reflector are considered as equal.
      
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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.

A new method is proposed in this paper for the evaluation of the following three important kinds of three-center and four-center integrals needed in molecular quantum mechanics: (1) (2) (3) Obviously, integral (2) is a special case of integral (3), so we need only to evaluate the first and the third. The following equations have been obtained for the evaluation of the above-mentioned two kinds of integrals (4) (5) where (6) (7) (8) (9) R_0 in equation (4) is the distance of point a apart from the origin located...

A new method is proposed in this paper for the evaluation of the following three important kinds of three-center and four-center integrals needed in molecular quantum mechanics: (1) (2) (3) Obviously, integral (2) is a special case of integral (3), so we need only to evaluate the first and the third. The following equations have been obtained for the evaluation of the above-mentioned two kinds of integrals (4) (5) where (6) (7) (8) (9) R_0 in equation (4) is the distance of point a apart from the origin located in bc line, while that in equation (5) is the distance between the two chosen origins separately located in ab and cd lines. θ_0 is the angle made byand, and θ_(10), θ_(20) and θ_(12) are respectively the angles made by and,and,and, The fourth term of equation (5) is, in general, negligible except in the case of R_0, which is less than two Bohr units. We propose two methods for the evaluation of and : the first one is to choose the origin at the end-point of the bond and evaluate the integral strictly inside and outside the sphere of radius, while the second one is to choose the origin at the mid-point of the bond and evaluate its value inside and outside the ellipsoid passing through the end-point of. The calculation involved in the second method is quite simple and, of course, a small error is introduced in changing the region of integration from the sphere to the ellipsoid, but it is quite negligible in comparison with the result of our first method. Equation (4) is exact in all cases, while equation (5) is exact in many cases but also involves certain errors in some other cases. From our actual calculations, we draw the conclusion that equation (5) is almost exact in the evaluation of integrals L_(aa, bc) and L_(ab, cd) and that certain error is involved in the evaluation of integral L_(ab, bc), but the error introduced does not exceed ten per cent.

在本篇文章中,我們建議了一種新方法來計算量子力學中的三中心和四中心積分;這方法此以往的好,因為計算簡單,應用廣闊,結果也比較可靠。我們用來計算三中心吸引能的公式[方程(5)]是在任何情况下都是正確的,而用來計算三中心和四中心的排斥能積分公式[方程(18)]在某些情况下是正確的,在另一些情况却能引進一些誤差。在計算非相隣鍵的積分時引進的誤差很小,可以忽略不計;在計算相隣鍵的積分時引進的誤差此較大,但不超過百分之十。我們建議兩種計算A_u和B_u的方法,一種方法是以鍵的一個端點爲原點,嚴格按照球內外的區域積分;另一種方法是以鍵的中點為原點,按照橢圓體的內外區域積分。前一種方法理論上嚴密,然而後一種方法計算簡單,收斂性快,引進的誤差也不大;尤其在計算相隣鍵的三中心排斥能的積分時,似乎後一方法得到的結果還比前一方法好。在本文中,為了容易說明起見,常常引用吸引能和排斥能這兩個名詞,實際我們的方法,是用來計算下列三類積分:它們不僅包括吸引能和排斥能積分,也把交换積分包括在內,甚至可以在更廣泛的意義上看待上列積分。若σ_1,σ_2也是Φ_1和Φ_2的函數時,仍可以用我們的一般展開理論處理,不過要此本文複雜。

In order to determine flood discharges in rivers without any previous hydrometric record, estimation according to its trace is the only approximation method that is comparatively reliable. The method requires only to find the flood trace, measure its slope and section of flow, estimate the channel roughness, and then substitute these data into hydraulic formulas to calculate the velocity and discharge. Although the results thus obtained may not be accurate, and it is impossible to ascertain the probability of...

In order to determine flood discharges in rivers without any previous hydrometric record, estimation according to its trace is the only approximation method that is comparatively reliable. The method requires only to find the flood trace, measure its slope and section of flow, estimate the channel roughness, and then substitute these data into hydraulic formulas to calculate the velocity and discharge. Although the results thus obtained may not be accurate, and it is impossible to ascertain the probability of occurrence corresponding to the flood, nevertheless, the data based upon are direct, and so the errors are low in comparison with those of indirect methods, such as the hydro-meteorological and the analogical, which might even yield radically unreliable results. Besides, in the statistical method of estimating flood flows, this method has been used to supplement those extraordinary flood data not recorded in history and yet valuable for statistics.The current method of estimating flood discharges from its trace assumes the state of steady flow and its velocity formula, from which it is impossible to obtain the maximum discharge that actually happens in the state of unsteady flow, and is only possible to calculate the discharge at maximum water level smaller than the peak discharge. This paper analyzes the shortcomings of the current method and suggests another means of estimating by taking average of the upper and lower limits of the maximum discharge. The error of estimation in the new method will not be over 17% by analysis, which, as compared with the standard of allowable error in hydrometrical survey, is not considerable.

工程設計中,欲在未經水文測驗的河流上定出設計用的洪水流率,依据洪水痕跡估算是唯一此較可靠而近似的方法。这方法只須調查洪水痕跡,測量其坡度及过水断面,估計河槽糙度,就可代入水力学中的公式而算出流速和流率,虽然这样所得的結果未必准确,且無从得知这次洪水相应的概率,但所憑借的资料是直接的,因而誤差的程度此較还小;不象水文气象法从雨量間接推算,或各种此照法依据其他流域的資料間接估計,可能得出很不可靠的結果。在流率資料統計法中,这方法也曆来增补那些历史上未曾测得的特大的可貴的洪水流率資料。 現行从洪水痕跡估算流率的方法假設了水力学中穩定流的流速公式,不能得出实际發生的不定流中的最大流率,而只約略算出那較小的最高水位吋的流率,憑以設計工程是不安全的。本文分析了現行方法的缺点所在,建議另一估算的方法,从最大流率的上下兩極限值取其平均数以估計之。新的方法的沽算誤差,循理推論,不会超过17%;衡以流速仪測量流率的許可誤差标准,並不算大。

 
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