查询词典 quality factor

A parametric study is made based on the solutions to illustrate the influence of the minimum quality factor concerning the creep and relaxation behavior of porous medium, the permeability parameter concerning the partial permeable behavior of boundary, and relative rigidity of liner and medium on the frequency response of the cavity.

并进行了算例分析，讨论了反映介质黏弹性性质的最小质量因子，反映孔洞边界半透水性质的渗透性参数及衬砌和介质的相对刚度对问题的影响。分析结果表明：以上参数对圆柱孔洞的频域响应有很大影响。

The above-mentioned compounds display the relative permittivity of around 10~20, the quality factor of around 1000~30000 GHz and the temperature coefficient of resonant frequency of around -9~-100ppm /℃.The compounds are sintered in the temperature range of 700 ~ 1100oC.

以上化合物相对介电系在10~20之间，化合物Q×f约为1000 ~ 30000、温共振系为-9~-100ppm /℃烧结温均并高在700~1100oC之间。

Quality factor is one of the important parameter of resonant circuits.

0引言谐振电路中一个非常重要的参数就是品质因数Q。

As quality factor of varactor rises, phase noise of voltage controlled oscillator will drop.

当可变电容的品质因素上升，振荡器的相位杂讯就会下降。

The method is used in a certain oil field for estimating the Q from the walkaway VSP and surface seismic data, the result shows that the quality factor Q corresponds well with petrophysics characters of reservoirs.

将该方法用于某油田的高分辨Walkaway井地联合地震资料Q值估计，结果表明，介质品质因子Q与介质性质和孔隙流体有良好的对应关系。

Gas hydrate and free gas ; Saturation ; Compressional wave velocity ; Quality factor

天然气水合物和游离气；饱和度；纵波速度；品质因子

Design the structure of high performance Low-E film including its material and thickness of every layer according to basic optical theory. Carry out an innovative work to calculate its optical performance by characteristic matrices and optical admittance. Compare the results with those we get by traditional measurement.3. Prepare Low-E films with RF magnetron controlled reactive sputtering. The result shows that in the visible region (380nm-780nm), the highest transmittance is 82.4% while the average value is 75%. In the NIR region (780nm-2500nm), the average transmittance is 16.2%. These characters can fit the demand of the glass used in architecture and cars, and also in other applications.4. We novelly use the material Titanium as protective layer to solve the problem that Ag layer would disappear when depositing the second TiO_2 layer. As the protective layer, Ti does not increase the number of targets so as to lower the costs. The thickness of the protective layer Titanium is adjusted by controlling of sputtering time. Results shows the Low-E films get the best optical character when the sputtering time of Titanium is 20 seconds5. We novelly proposed a new transmittance quality factor Q=_·(?_-__ to evaluate the performances of Low-E films, which makes it easier to judge the qualities of Low-E film.6. The photocatalysis of Titanium dioxides is researched and introduced into Low-E films. Sb-doped TiO_2 thin films are prepared. Its photocatalysis and hydrophilicity are measured.

论文的工作主要有：1、总结了低辐射薄膜的制备方法，性能，以及国内外最新研究进展和应用，并对两种类型的低辐射薄膜进行了比较。2、从光学基本理论开始，设计了离线低辐射薄膜的结构，包括每一层的材料和厚度，并创新性的用特性矩阵和光学导纳理论计算了该离线膜的光学性能，利用软件对其进行了仿真，与实际制备的薄膜所测量的性能相比较。3、完成在实验室仪器上制备低辐射薄膜，掌握其工艺条件，解决了超薄金属膜的制备问题，所制备的低辐射薄膜在可见光区(380hm-780hm)最高可达82.4%，平均透射率为75%；在近红外区(780nm-2500nm)的平均透射率为16.2%，其性能达到建筑物幕墙玻璃，汽车前挡玻璃等应用标准，并为进一步的大规模生产打下基础。4、针对中间银层在镀上层膜时易被氧化这一工艺难题，本研究创新性的提出用Ti膜作为保护膜，没有增加新的靶材，提高了生产效率，并节约了生产成本。

Firstly, the antenna's equivalent circuit and quality factor will be calculated, then the capacitance value of matching circuit can be worked out.

匹配电路设计首先需测出天线的等效电路，再计算出天线的品质因子，然后得出匹配电路的电容值。

The resonant frequency and quality factor of a tag will decrease with increasing antenna resistance.

当天线电阻增加后，会引起标签谐振频率与品质因子下降。

The mechanical properties and the electrical properties of the cantilever, such as spring constant, resonant frequency, mechanical quality factor, piezoelectric output and the noise level, determine the resolution of a AFM when piezoelectric cantilever is used as the force sensor.

在作为原子力显微镜的力传感器使用时，压电探针的机械特性，如弹性常数、谐振频率、谐振质量因子，以及电子特性如压电输出、噪声水平等决定了原子力显微镜的分辨率，而对于带有针尖和三角形前端的PZT压电探针，这些特性迄今未得到系统研究。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。