DFF

Logical control circuit design : this part includes the design of DFF , non-overlap clock generate and so on .

逻辑控制电路设计：D触发器、不重叠时钟脉冲发生器等模块的设计。

The Detection of DFF Gene in Four Species of Fish

4种鱼中DFF基因的检测

A new auto-focusing algorithm based on Depth from Focus ( DFF ) was presented according to the properties of the automatic iris imaging system .

针对自动虹膜图像采集装置的成像特点，本文提出了一种新的基于对焦深度法的自动对焦算法。

The result revealed that the lifetime of DFF and DCF were remarkably increased , and their properties of photobleaching resistance were significantly enhanced .

结果表明，与荧光素相比，DFF和DCF荧光寿命显著提高，抗光漂白性能明显增强。

Objective To study the clinical effect of Diabetic Foot Formula ( DFF ) and its influence on hemodynamics of arteria dorsalis pedis ( ADP ) .

目的观察以糖足方为主综合治疗糖尿病足（DF）的临床疗效及其对足背动脉血流动力学变化的影响。

The decision circuit of the chip is applied with a DFF using SCFL structure and its tuned phase shifter with differential current amplifiers according to the principle of vector addition .

该芯片的判决电路采用SCFL（源级耦合晶体管逻辑）的D触发器结构，根据矢量叠加原理设计，采用差动电流放大器构成可调移相器。

In the method DFF ( depth from focus ), aiming at the characteristic of the images , we proposed that Wiener filter and image brightness normalization can be apply as preprocessing tools .

首次提出用维纳滤波和图像亮度归一化对图像做预处理，使对焦深度法的评价曲线形状得到明显的改善。

A novel design plan of divider was presented . In the higher frequency band , M / S DFF structured by CMOS SCL was used to divide to satisfy the high speed command .

提出了一种新颖的分频器设计方案，在高频段采用改进的CMOS源耦合逻辑（SCL）结构的主从D触发器进行分频，以满足高速要求；

Results Dff F3 and Der f ⅲ were demonstrated strongly allergic activities , which can be highly recognized with IgE from sera of the mite-allergic patients with asthma .

结果DffF3和DerfⅢ呈现强致变应性，均能与尘螨过敏哮喘患者血清IgE结合。

The low dff value in physiologically active organs , such as young leaves , flowers , and stem apices indicated that the nodular nitrogen fixation and the application of nitrogen fertilizer were important for their development .

dff值表明，在花序、顶心、绿叶生理功能旺盛器官，比茎干和衰老器官低，说明生物固氮或土壤供氮对紫云英功能器官发育的重要性。

Based on the study of the theories and key points of the Depth from Focus ( DFF ), a 3D reconstruction method of tool wear area has been designed . And a 3D visualization software of tool wear area was developed .

本文在深入研究聚焦合成理论、方法及关键技术的基础上，设计出了基于聚焦合成的刀具磨损区域三维重构的方法，并开发了三维刀具磨损区域可视化软件。

The phase frequency detector ( PFD ) circuit is constituted with the dynamic D flip-flop ( DFF ) and the delay circuit can , which can effectively overcome the dead area , and have high-speed and low power consumption features .

鉴频鉴相器电路采用动态D触发器（DFF）和延迟电路构成，能有效克服死区，具有高速和低功耗的特点。

It is also found that the fourth and fifth orders GVDs are the decisive factors for flatly ultra-broadened SC generation from anomalous dispersion-flattened fiber ( DFF ) and dispersion-flattened / decreasing fiber .

五阶GVD则对反常色散平坦光纤（DFF）和色散平坦渐减光纤（DFDF）中平坦、宽带SC谱的形成起着决定性的作用。

The auto-focusing is achieved by means of Depth From Focus ( DFF ), through which , a series of images with different fuzzy degrees are obtained through changing lens positions and a focusing evaluation curve is formed through calculating the definition evaluation for each image .

系统采用对焦深度法实现自动对焦，通过改变镜头的位置获得一系列模糊程度不等的图像，计算每幅图像的清晰度评价值构成对焦评价曲线；

Methods The allergenic proteins , Dff F3 and Der f ⅲ ( well known allergen ) from the whole culture extract of Dermatophagoides farinae were purified by chromatography and sedimentation techniques . Allergic activities of both proteins were identified by skin prick test and RAST .

方法应用层析介质及蛋白质沉淀技术从螨代谢分泌物中分离、纯化粉尘螨变应原DffF3及国际公认的变应原DerfⅢ，经临床检测和放射性变应原吸附实验（RAST）鉴定其变应原性。