PFL

Design of a Spiral PFL Based on Tesla

一种Tesla型的螺旋脉冲形成线设计

Analysis of PFL family gene in Escherichia coli K-1 2 from bioinformatics

大肠杆菌K-12中PFL家族基因的生物信息学分析

This made the mechanical recovery well having a misleading appearance of higher producing fluid level ( PFL ) .

这种现象使机采井存在动液面偏高假象等问题。

Based on the above research , a set of long-pulse accelerator with helical PFL is built .

在上述工作的基础上，研制了一台单线结构的水介质螺旋线型长脉冲加速器，这种加速器在国内外还未见报道。

A compact output switch for a water pulse forming line ( PFL ) e-beam accelerator was designed .

介绍了一种水介质脉冲形成线强流电子束加速器的输出开关的设计和实验结果。

PFL vertical compound crusher is new product based on the PCL vertical compound crusher and domestic and overseas fine crushing technology .

PFL立式复合破碎机是在我厂在PCL立式复合破碎机基础上，结合国内外细碎技术进行优化设计而成的新产品。

Passive fiber loop ( PFL ) is an important fiber basic device that plays a significant role in many fields including optical communication and fiber sensor .

无源光纤环是一种重要的光纤基础器件，在光纤通信和光纤传感等技术中具有重要的应用。

According to the study on PFL discharge process , the spectrum and waveform functions for the pulse formed by helical PFL are also deduced .

通过对脉冲形成线放电过程的分析，导出了螺旋线型脉冲形成线所形成脉冲的频谱函数和波形函数。

Thus by using pressured water as dielectrics , the energy density of the energy system could be enhanced notablely and the PFL could be miniaturized too .

这一结果不仅有利于脉冲形成线的小型化，还能提高以水为储能介质的储能系统的储能密度。

The traditional power conditioning scheme uses a pulse transformer and sometimes an additional capacitive pulse forming line ( PFL ) to improve the output waveform , making the system bulky .

传统的脉冲功率调制电路需要脉冲变压器，体积庞大，若其后再采用传输线作中间电容储能，尽管输出波形有改善，但体积更大。

The frequency of the charging loop circuit is low enough that the peak pre-pulse voltage is only on kV level as PFL is charged through a transformer .

在通过变压器对脉冲形成线充电的方案中，由于回路充电频率低，预脉冲电压幅值很小，只有kV量级。

The PFL with 6 × His-Tag was purified by metal affinity chromatography . The characterization of purified PFL was carried out .

利用金属亲和层析对添加了6×组氨酸标签的PFL进行纯化，对PFL的酶学性质进行了研究。

The difference between the PFL and FFL is not obvious for large tensile stresses and so does the effect of the contact pressure on the FFL .

当拉应力较大时，微动疲劳寿命（FFL）与普通疲劳寿命（PFL）相差不大，法向压力的影响不明显；

Serial PFL to form 3-pulse

单线串联形成三脉冲实验研究

A I.OMV compact Tesla transformer with PFL

带脉冲形成线的1.0MV紧凑型Tesla变压器

In pulse power field , the high power pulse transformer type charging system with storage capacitors is widely used to substitute the traditional Marx generator for Pulse Forming Line ( PFL ) charging , because of its compact structure , small volume .

在脉冲功率领域，脉冲变压器型充电系统具有结构紧凑、体积小等特点，所以常用电容器对其放电来代替Marx发生器给加速器的脉冲形成线（PFL）充电。

The theory and characteristic of a compact Tesla transformer are introduced , and an unitized configuration design is performed for 1.0 MV , 100 Hz Tesla transformer and 40 Ω, 40 ns pulse forming line ( PFL ) .

介绍了紧凑型Tesla变压器的工作原理和功能特点，在此基础上对电压1.0MV、重复频率100Hz的Tesla变压器和阻抗40Ω、宽度40ns的脉冲形成线（PFL）进行了一体化结构设计。

It is shown that what affect the amplitude of pre-pulse voltage are the grounding inductance and the frequency of the charging loop circuit , which is determined by the secondary coil inductance of transformer and the capacitance of PFL .

研究表明由变压器副边电感和脉冲形成线电容构成的回路充电频率和接地电感的大小是影响预脉冲电压幅值的主要因素。

Two coaxial open cores in Tesla transformer serve as the inner and outer conductors of PFL , and a traditional PFL is combined with the Tesla transformer , then the pulse generator can be smaller , more efficient , and more stable .

用Tesla变压器的两个同轴开环铁芯作为PFL的内外导体，将传统的形成线结合在Tesla变压器中，从而脉冲发生装置具备了体积小、效率高、性能稳定等特点。

Methods : 48 subjects with later period gastric cancers were randomly divided into two groups , 24 patients in the treated group were administered with " jian pi li qi fang " and chemotherapy ( PFL regimen ), 24 in the control group with chemotherapy alone .

方法：将48例晚期胃癌住院患者，随机分为两组，其中试验组24例，对照组24例，两组均给予PFL（紫杉醇+CF+5-Fu）方案化疗，试验组加服健脾理气方。

Solutions can be obtained by perturbation method as V → 0 . The sign and magnitude of the coefficient of the cos 8 term calculated in this way is in good agreement with PFL experiment under the condition that the current of the source varies with the time .

这样获得的cosθ项前面的系数，其符号和大小与实验结果相一致，但是应伴随条件：电流源必须是与时间有关的.PFL实验正是在上述条件下进行的。

A ( 500 kV / 400 kA / 100 ns ) z-pinch device was constructed using a Marx generator , a pulse forming line ( PFL ), a gas-filled V / N field distortion switch , a transfer line , and a z-pinch load .

输出参数为500kV/400kA/100ns的快速z箍缩（z-pinch）装置由Marx发生器、脉冲形成线、充气型V/N主开关、传输线及负载组成。