查询词典 RF

Anti-DNase B microtitration test may be an useful tool in the diagnosis of RF.The positive rate of anti-DNase B test was higher than that of ASO in patients with ARHD.It is advantageous to perform more than one antibody test.

抗DNA酶B试验对急性风湿热和风湿性心脏病活动期的诊断有重要临床价值，与ASO结合检测可提高诊断率。

For clarity's sake, the frequency range of nonionizing radiation used in wireless communications is referred to as "radiofrequency/microwave radiation" or RF/MW.

为明确起见，频率范围的辐射nonionizing中使用的无线通信被称为&射频/微波辐射&或射频/兆瓦。

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。

It has great value to diagnose RA when pannus enhancement in MRI existed simultaneity with morning stiffness or and RF positive.

结论MRI血管翳强化与晨僵或类风湿因子阳性同时存在时，对于诊断早期类风湿关节炎具有较大的价值。

There were significant differences between RA and non-RA groups in morning stiffness, symmetric arthritis, rheumatoid factor positivity, erythrocyte sedimentation rate, C-reactive protein and synovial hyperplasia, enhanced pannus, bone marrow edema as well as bone erosion.

晨僵、对称性关节肿胀、类风湿因子(rheumatoid factor， RF)阳性、血沉(erythrocyte sedimentation rate， ESR)增快、C反应蛋白(C-reactive protein， CRP)值升高诸指标在RA组与非RA组之间具有显著差异性。MRI各主要征象中滑膜增厚、血管翁强化、骨髓水肿、骨侵蚀诸指标RA组与非RA组之间具有显著差异性。

Photoemissive materials are now used forgenerating high brightness electron bea■s.Drivenby short-pulsed laser,these new cathodes willmeet the requirment of large rf-driven freeelectron lasers.

为了满足射频直线加速器及其驱动的大功率自由电子激光器研究的需要，以脉冲激光激发光电发射材料产生高亮度电子束的研究正日益受到重视。

Patients with polyarticular course JIA (19 females, three males; mean age 13.9 years; mean disease duration 6.3 years; 15 with polyarticular onset, seven with systemic onset, one with residual systemic activity; eight rheumatoid factor positive; eight with erosive disease) were treated with etanercept for up to 24 months.

22名多关节幼年型类风湿关节炎患者(19 例女性， 3例男性；平均年龄 13.9 年；平均病程 6.3 年； 15例现有多关节症状， 7例有全身症状， 1例有残余的全身症状； 8例RF阳性； 8例有骨关节侵蚀)使用etanercept治疗超过24 个月。

The RF and digital performance of InGaP/In0.22Ga0.78As pseudomorphic high electron mobility transistors with different doping profiles are investigated.

不同载子参杂方式的磷化铟镓高电子迁移率电晶体的高频与数位特性在此被研究。

A Reflectional radio receiver also called a reflex radio is a radio receiver design in which the same amplifier is used for both the high-frequency radio RF and low-frequency sound AF signals .

一个来复收音接收机是这样一种收音机，它的放大器同时用来对高频信号和低频信号进行放大。

The main contributions of this thesis are as follows:(1)To address the problem of kernel parameterσselection and regulation of the decision boundary in SVDD algorithm,this thesis proposes a new kernel parameter optimization method based on the spheral distribution of samples in kernel space and regulation of the decision boundary method based on KPCA(Kernel Principal Component Analysis).

本论文主要以支持向量数据描述(Support Vector Data Description，SVDD)与随机森林(Random Forests，RF)模式识别工具为基础，对流程工业在线故障诊断的若干问题进行研究，其具体内容如下：(1)针对SVDD的核参数σ优化及其决策边界规整问题，提出了基于核样本球形分布的核参数优化方法与基于核主元分析(Kernel Principal ComponentAnalysis，KPCA)的SVDD决策边界规整方法。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。