查询词典 F.D.

The reason for this is that ratio F/D determines the angle the edges of the parabola are seen from the focus.

原因就是F/D的比率限定了抛物线焦点到边缘的角度。

The ratio F/D is also crucial in determining the characteristics of the feed that will illuminate the dish.

在决定典型照射馈源时，F/D的比率也是决定性因素。

Research on the Depth Measurement of Micro Channels of Micro Fluidic Chips Based on D.F.D.

论文标题：基于D.F.D。的微流控芯片流道深度检测研究

This paper is the discussing about the aperture -coefficients of the Zoom Lens, the formula for the calculating is: F=f/d where.

该论文是探讨变焦镜头的光圈系数，镜头的光圈系数的计算公式：F=f/D(其中：F为光圈系数，f 为镜头焦距，D为光圈开口直径)。

Motiveless malignity; unprovoked and dastardly attack- F.D.

无缘无故的敌意；无缘无故的怯懦的攻击-f.d。

Terbium ion with larger magnetic moment and lower f-d transition energy gap should possess the large Verdet constant.

具有较大磁矩和较低f-d跃迁能隙的顺磁离子铽应具有大的费尔德常数。本工作以高Tb2O3含量的Tb2O3-B2O3-Al2O3-SiO2为基本系统。

To collect forty-five NSCLC patiens that correspond to our qualification. All the object were treated by LCEHART radiated by 6MV/15MV X-ray, antero-three weeks adopted normal radiotherapy 2GY/F/d,the dose of the large radiation field reached 30GY/15F/3W then adopted LCEHART, the fractionation dose of the forth week, the fifth week and the sixth week was,1.3GY/F/Bid, 1.4GY/F/Bid, 1.5GY/F/Bid, the interval was six to eight hours, the total dose reached 72GY/45F/6W, and the dose of chorda spinalis was restricted below 40GY.

收集符合入组条件的NSCLC43例，采用后程逐量加速超分割放射治疗(NSCLC：采用6MV/15MV的X线照射，前3周为常规照射2GY/F/d，总剂量30GY/15F/3W即开始后程逐量加速超分割放疗，第4，5，6周每周分次照射剂量分别为1.3GY，1.4GY，1.5GY，每天2次照射，间隔6-8小时，均为每周5天，总剂量72GY/45F/6W，脊髓剂量限制在40GY以下)同步两周期化疗(NP方案：盖诺25mg/m2 ，静滴d1、d8，顺铂25mg/m2，静滴d1-3，同时水化、利尿、止吐)。

Pass to computer control technology to the application and the research in the shaft hoist, we introduce that the new breeze well hoist computer control system to adopt the most advanced technique of PLC nowadays, by full-digital thyristor DC speed regulated system to constitute of parallel 12 pulse technology and magnetic fields to change toward technology, reform the traditional generator- electric motor machine set and relay control of hoist, by F- D machine set the unadvanced drive of wind reformation to become having the international advanced the horizontal full digital DC to drive the system.

通过对计算机控制技术在矿井提升机中的应用和研究，阐述了新风井提升机计算机控制系统采用了当今最先进的PLC技术、由全数字晶闸管直流驱动系统组成的并联十二脉动整流技术和磁场换向技术，来改造传统的发电机—电动机机组+继电器控制的提升机，从而使落后的F—D机组驱动的提升机改造成为具有国际先进水平的全数字直流驱动系统。

Efficiency of 2 el. bi-quad feed with parabolas having different F/D ratio

图。18。用叠加双菱天线做馈源的不同F/D比率的偏馈抛物面天线的效率 19 November，2009 2.4GHz 抛物面天线的高效馈源 Fig。

I presented some diagrams of efficiency of a coffee can with different diameters as feeds for parabolas with different F/D and it is very clear how efficiently they work with offset dishes whose F/D is in the range 0.7-0.9.

我提供一些不同直径的咖啡罐做不同F/D的抛物面的馈源的效率图表，可以清楚的看出，当偏馈抛物面天线的F/D在0.7-0.9范围时，它们的工作效率如何。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。