pfr

The level of Pfr in seeds is affected by multiple factors .

种子内的Pfr水平受到诸多因素的影响。

On-line Monitoring and Computing of Unit PFR Characteristic Parameter Based on PMU

基于PMU的机组一次调频特性参数在线监测

The model built in this work is compared with CSTR model and PFR model .

对本文所建模型与常用的CSTR模型和PFR模型作了比较。

The Property and Application of a New Type of Filling and Retanning Agent PFR

新型填充复鞣剂PFR的性能和应用

The results show that tm was mainly influenced by circulation flow and PFR form .

混合实验结果表明，混合时间受循环流量和PFR形式的影响较大。

Effects of Dynamic Retention of Deinking Chemicals on PEO / PFR System

脱墨化学药品对PEO/PFR系统动态助留作用的影响

Abnormal PFR at rest was found in 88 % patients with OMI .

PFR在OMI患者中的异常发生率是88%。

The results showed that PFR was more sensitive than the others for detecting ischaemic heart disease .

结果表明，PFR反映心肌缺血改变比其他心功能参数敏感。

Action of PEO / PFR Dual Flocculation System on the Flocculation of Papermaking White Water

PEO/PFR双元絮凝系统对造纸白水的絮凝作用

PEO / PFR Dual Flocculation System for Treating Whitewater in Papermaking

应用PEO/PFR双元絮凝系统处理造纸白水

PFR model of gas-liquid-solid three phase drop-fluid bed reactor

气－液－固滴流床反应器的PFR模型研究

Conclusion PFR is an effective method to be used as a preferred surgery method on the treatment of Chiari malformation .

结论后颅窝扩大重建术是治疗Chiari畸形合并脊髓空洞症的有效方法，可作为外科治疗Chiari畸形合并脊髓空洞症的首选术式。

Plug flow feature in the PFR was maintained with high circulation flow , large PFR volume and small diameter .

增大循环流量、PFR部分体积或者采用较小的管径均有利于保持PFR中平推流特性。

The thermal stability and char yield of PFR were depended on the degradation process of methylene bridges .

其中亚甲基的热解对酚醛树脂的热稳定性及高温下的成炭性能有着至关重要的作用。

And while sugar concentrations were reduced to 3 % or 1 % , the pfr .

糖浓度为3%、1%时转株率下降较多。

As an important technical means of frequency control of the power system , PFR ( Primary Frequency Regulation ) is of great significance to the stability of the frequency .

一次调频作为电力系统频率控制的一项重要技术手段，对电网频率稳定具有重要意义。

Study on the Effect of Two-Component Retention and Drainage Aids Systems & The application of PEO / PFR system in wood-containing pulp

双元助留助滤体系的作用效果初步研究&PEO/PFR在含机木浆中的应用

The PFR is an intensive breeding site being constructed under unified regulations , which is located at a suitable area for pig breeding .

生猪养殖小区即是在适合生猪养殖的地域内，为专门从事生猪养殖而按照规范统一建设的集约化养殖场所。

The left ventricular ejection fraction ( LVEF ) and the left ventricular peak filling rate ( PFR ) were higher in the treatment group .

左室射血分数（LVEF）和左室峰充盈率（PFR）明显增高。

Using the latest data and carrying out a systematic research and empirical analysis of open-end fund PFR and other factors . Second , improvements in research methods and study perspective .

利用该最新数据对我国开放式基金PFR和其他影响因素进行了系统的研究和实证分析。二、在研究方法和研究视角上进行了改进。

Plug flow reactor ( PFR ) and Continuous stirred tank reactor ( CSTR ) were studied to compare their performance for treating dairy manure .

对推流式反应器（PFR）和完全混合式反应器（CSTR）用于牛粪液厌氧消化的性能进行了比较研究。

As the yield increased , the residence time in PFR was less than that of CSTR and the immobilized cells were not hurt by the shearing .

随着转化率的提高，填充床反应器较连续机械搅拌反应器所需的停留时间短且不会因剪切力使固定化颗粒受到损伤。

A superstructure model of reactor network is developed using plug flow reac - tor ( PFR ) and continuous stirred tank reactor ( CSTR ) .

以平推流反应器（PFR）和全混流反应器（CSTR）作为基本反应器类型建立了一个反应器网络的超结构模型，构造了超结构模型的非线性规划问题。

In recent years , with the adjustment of livestock breeding industry , the pig farming region ( PFR ) representing the development patterns of modern pig raising industry began to emerge .

近年来，随着养殖业结构的调整，代表现代化养猪业发展模式的养殖小区开始涌现。

A systematic laboratory experimental study is conducted on technology of synthesizing water soluble phenol-formaldehyde resin ( PFR ) as crosslinker for weak polymer gels ( WPGs ) .

对用作聚合物弱凝胶交联剂的水溶性酚醛树脂合成工艺进行了系统的实验研究。甲醛溶液（甲醛水）

Germination or dormancy of seeds depends on the content of Pfr and Pfr / ( Pr + Pfr ) ratio established in photosensitive seeds .

种子的萌发或休眠均取决于萌发时种子内所建立起来的Pfr含量和Pfr/（Pr+Pfr）比值。

RTD experiments validate the existence of dead zone or backmixing . It was also stated that fluid dynamics character in the PFR was affected by circulation flow and diameter .

停留时间分布在验证了系统内存在死区或者返混情况的同时，表明PFR内的流体动力学特性受循环流量和管径的影响较大。

Using plug flow reactor ( PFR ) as pre condensing and dislocation reactor is helpful in increasing the content of methylene diphenylamine ( MDA ) in the product .

在预缩合、转位阶段都采用平推流反应器（PFR）有利于提高二苯基甲烷二胺含量。

Results In patients with hypertension , EF , PER and PFR decreased slightly when the diameter of left atrium and left ventricle was normal , although there was no significant difference ( p0.05 ) .

结果高血压病患者，左房左室内径正常时，左房左室的EF、PER及PFR略有下降，但差别无显著意义（P0.05）；

The design of the primary frequency regulation ( PFR ) function for the fossil-fired units in Zhejiang Electric Power Grid is introduced , and its application is illuminated through the units ′ performance in grid accidents .

叙述了浙江电网火电机组一次调频功能的设计方式，通过机组在电网事故中的表现阐述了浙江电网火电机组一次调频功能的应用情况；