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因数和
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  sum of divisors
     This paper discusses the properties of the composite number-theorectic function sφ(n)=s(φ(n)),where s(n) denotes the sum of divisors of n,φ(n) denotes Euler function.
     本文讨论复合数论函数sφ(n)=s(φ(n))的性质。 这里s(n)是因数和函数,φ(n)是欧拉函数。
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  “因数和”译为未确定词的双语例句
     Friction coefficient and microhardness of the composite coating were 0.08 and 600 HV0.05.
     该镀层的摩擦因数和显微硬度分别达到0.08和600HV0.05。
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     The results of substitution of Ba2+ to Ca2+ in 0.3CaTiO3-0.7(Li1/2Sm1/2)TiO3 ceramic showed that the modification can improve the dielectric constant.
     对CaTiO_3-(Li_(1/2)Sm_(1/2))TiO_3的改性结果表明:选取Ba~(2+)取代Ca~(2+),在保持品质因数和谐振频率温度系数基本无变化的前提下可以有效提高介电常数。
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     The side chain distribution factor and side chain length factor for quantitatively characterizing the molecular structures were obtained by correlating the molecular structures with their minimum potential energies.
     对这些三维分子结构及其与全局最低能量的关系进行了分析,分别提出了定量描述不同侧链分布结构和不同侧链长度结构与分子能量关系的侧链分布因数和侧链长度因数。
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     For designing the neutron dose equivalent instrument, the variations of quality factor and radiation weighting factor must be considered, and the calibration of instrument according to new radiation weighting factor is necessary.
     根据所得的中子辐射权重因子对中子剂量测量的影响规律得出,在设计中子剂量当量测量仪器时,需充分考虑到品质因数和辐射权重因子数据的变化,并应按照新的辐射权重因子数据进行刻度。
     Average electrical and thermal coefficient of performance (COP) of the air processor are 9.4 and 3.0 in summer with an average thermal COP of 2.2 in winter.
     热回收型新风机在夏季的平均电性能因数和热性能因数分别为9.4和3.0,冬季的平均热性能因数为2.2。
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  相似匹配句对
     n -- compression curve factor;
     n --压缩曲线因数
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     THE QUALITY FACTOR ROR IONIZING RADIATION
     电离辐射的品质因数
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     The Sequence Sum of the Greatest Common Factors
     最大公因数序列的
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     Products Sum Formula of GCD Matrix
     最大公因数矩阵的积
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  sum of divisors
We give an elementary proof of the formula χ(KnA)=n3σ(n) for the Euler characteristic of the generalized Kummer variety KnA, where σ(n) denotes the sum of divisors function.
      


New design formulae are presented for the Tchebyscheff array, which afford straightforward computation in the design work. It is proposed to use the energy concentration factor and directivity factor as indication of the directivity of the array, and formulae as well as the way of using them are presented. Finally, the application of the Tchebyscheff arrays in the diffuseness measurements for room acoustical investigation is discussed, the method is more sensitive to the change of diffuseness than those heretofore...

New design formulae are presented for the Tchebyscheff array, which afford straightforward computation in the design work. It is proposed to use the energy concentration factor and directivity factor as indication of the directivity of the array, and formulae as well as the way of using them are presented. Finally, the application of the Tchebyscheff arrays in the diffuseness measurements for room acoustical investigation is discussed, the method is more sensitive to the change of diffuseness than those heretofore suggested.

本文利用倍角函数的降幂展开式提出了切比雪夫阵的新设计方程,使设计工作变成直截了当的计算工作.对切比雪夫阵的指向性提出了用能量集中因数和指向性因数表达的概念,并给出了二者的计算方法和使用范围.最后提出用切比雪夫阵作声场扩散测量的方法,这种方法比过去的方法更为灵敏.

The imaginary part of the dielectric constant ε" and of the permeabilityμ" of the sample were determined by measuring the change of reflection coefficient of a resonance cavity of the reflection type with and without the sample in it. The effects of the shape of the sample and its location in the cavity on the measurement were investigated. The sensitivity of the measuring system was high. By raising the quality factor of the cavity, adjusting it to approach critical coupling, and appropriately choosing a cavity...

The imaginary part of the dielectric constant ε" and of the permeabilityμ" of the sample were determined by measuring the change of reflection coefficient of a resonance cavity of the reflection type with and without the sample in it. The effects of the shape of the sample and its location in the cavity on the measurement were investigated. The sensitivity of the measuring system was high. By raising the quality factor of the cavity, adjusting it to approach critical coupling, and appropriately choosing a cavity of smaller volume, it should not be difficult to measure the loss factor with this set of measuring devices to an accuracy of the order of 10-5.

本文利用反射式谐振腔,通过测量放入样品前后谐振腔反射系数的变化,确定介电常数虚部ε″和磁导率虚部μ″。研究了样品形状和放在谐振腔不同位置对介电常数和磁导率测量的影响。测量系统有较高的灵敏度。通过提高谐振腔的品质因数和使谐振腔接近临界耦合,并适当减小谐振腔的体积,使系统测量损耗角正切达到10~(-5)数量级并不困难。

A general equation revealing the relationship between the attenuation at passband center A ( 0 ) and the parasitic dissipation factor of the elements o and input dissipation factor d is derived for all-pole type lossy filter. Based upon this equation, families of curves are computed and plotted for three conventional types of filters. For filters with given element dissipation factor, both the optimum selection of the input dissipation factor and the determination of the attenuation at the passband center can...

A general equation revealing the relationship between the attenuation at passband center A ( 0 ) and the parasitic dissipation factor of the elements o and input dissipation factor d is derived for all-pole type lossy filter. Based upon this equation, families of curves are computed and plotted for three conventional types of filters. For filters with given element dissipation factor, both the optimum selection of the input dissipation factor and the determination of the attenuation at the passband center can be readily accomplished with the aid of these curves. If the allowable range of the attenuation at the passband center is given, the same families of curves enable us to determine conveniently the corresponding allowable range of the element dissipation factor.Some problems of practical interest are also discussed in connection with examples.

本文导出了全极点型有耗滤波器的通带中心衰减A(0)与元件寄生损耗因数a和输入端损耗因数d之间的一般关系式,并据以绘制出了可供三种常用滤波器设计用的曲线族。对于那些元件损耗因数已知的滤波器,查索这些曲线能十分容易并最佳地选定输入端损耗因数和确定通带中心衰减值。若规定了通带中心衰减值的允许范围,则可借助该曲线族来确定元件损耗因数的允许范围。文末给出了设计示例并讨论了从中得出的结论。

 
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