class f

Cost-effectiveness comparison between combined-cycle power plants respectively based on E class and F class gas turbines

E型和F型燃机联合循环电厂的性能及经济性比较

This paper introduces the synthesize and technical properties of a new class F fast curing solventless Insulation Impregnating Varnish, and analyzes related problem simply.

本文介绍了F级快固化无溶剂绝缘浸渍漆的合成及工艺性能，并对有关问题作了简单的分析。

Petroleum products-Fuels ( class F) Classification-Part 2: Categories of marine fuels

GB/T12692.2-1990石油产品燃料（F类）分类第二部分：船用燃料油品种

Results showed that class F fly ash is superior to class C fly ash in suppressing ASR expansion.

结果表明：相同掺量时，低钙粉煤灰抑制ASR能力优于高钙粉煤灰；

General class F solventless impregnating varnishes for both high and low voltage motors

高、低压电机通用F级无溶剂浸渍漆

Study on a new class F low temperature fast-curing solvent impregnating varnish

新型F级低温快固化有溶剂浸渍漆的研制

TGA shows that the heat decomposition temperature is 223.14 ℃ and the film heat resistant index is 158.95. All properties of the new type insulating composite film can satisfactorily meet reguirements of class F insulating material.

测试数据表明复合膜的表观分解温度TA为223.41℃，耐热指数TZG为158.95，其它各项性能指标均能满足F级绝缘材料的要求。

The insulation system of the exciter fulfills the insulation class F requirements.

励磁机的绝缘系统满足f级绝缘要求。

The insulation class F or class H. The insulation of open-loop U/ f condition of. structure has the adaptability to high carrie frequency voltage supplied by frequency converter.

电动机的绝缘等级为F级或H级，绝缘结构具有对变频器输出高载波频率电压的适应能力。

An Empty House Solutions of gap in class F moulded stator winding

F级模压定子线圈发空问题的研究

The No. 91 school of Guangzhou is a class F school where the senior middle school students have difficulties in writing.

广州市第91中学是一所F类学校，那里高中生的写作存在障碍，经过问卷调查、采访、随意的交谈等方式了解到，主要原因在于本地区社会环境不好，没有文化氛围；

Research and Application of Class F Fast-curing Insulating Varnish

F级快干绝缘漆的研制及应用

The practical research of the composition-writing training of the class F students in Guangzhou finds its origin from the problems I have encountered in the teaching of Chinese, especially that of the teaching of composition-writing teaching in my six-year teaching there in Guangzhou.

对广州市F类学生作文能力训练的实践研究源于本人在广州市第91中学执教六年来所遇到的语文教育方面、特别是作文教学方面的一些问题。

The paper deals with the study of the insulating binders of Class F, which is applied to mica tape used in main insulation for electric machines.

本文系研究F级绝缘胶，并制成云母带用作电机主绝缘。

Study on new adhesive for class F mica tape

新型F级云母带用胶粘剂的研制

Design and Realization of High Efficiency Class F Power Amplifier for Interphone Application

高效率F类对讲机功率放大器的设计与实现

Petroleum products-Fuels ( class F) Classification-Part 1: General

GB/T12692.1-1990石油产品燃料（F类）分类第一部分：总则

A cohesionless-frictional soil, ordinary Portland cement and Class F flyash was used.

试验采用粘土、普通波特兰水泥和F级粉煤灰。

We use maximally Flat Waveforms technology and harmonic-control theory to design class F power amplifier.

采用最平坦波形近似技术和谐波控制理论分析和设计F类功率功率放大器。

By proceeding with the analysis of the reasons causing the aging of the stator winding bars insulation, the necessity for stator winding bars to adopt class F insulation and relative fixing technological improvement are pointed out so as to extend the service life of the winding bars insulation.

从发电机线棒绝缘老化原因分析入手，指出为延长定子线棒绝缘使用寿命，线棒主绝缘采用F级的必要性以及相关工艺的改进。

The study and design of 3.5 GHz class F power amplifier with high efficiency

一款3.5GHz高效率F类功率放大器的研究与设计

The basic principle and design method of class E and class F power amplifiers were described in detail in this thesis. The high efficiency of the power amplifiers has been achieved with the matching circuits formed by micro strip branch lines.

文中详细地介绍了E类、F类功率放大器的基本原理及设计方法，采用微带分支线设计匹配电路的新方法，实现了E类、F类功率放大器的高效率。

Some sufficient conditions for every solution to the equation satisfying the intial condition to converge to 1 by using a class f function on R was obtained.

文中构造了一类形似的实值函数并证明了相关结果，并将自变量换为离散分3种情况得到了原差分方程每一解在初始条件下趋于1的充分条件。

The efficiency of the generator can be improved. Stator insulation class rises to F class and temperature rise limites within B class.

发电机的绝缘等级提高到了F级，发电机的温升按照B级考核。

This paper studies the formula and some properties of a new class F low temperature fast curing solvent impregnating varnish.

论文介绍了一种新型F级低温快固化有溶剂浸渍漆的合成及其工艺性能，对该漆性能的影响因素进行了分析。

Then, we define a class of tangent cone F convexity in terms of the tangent cone directional derivative, and prove the sufficient optimality conditions for ( VP).

然后利用正切锥方向导数定义一类正切锥F凸函数类，并给出了（VP）正切锥真有效解的充分性条件；

The Study of the Insulating Binders of Class F

F级绝缘胶的研究

Research and Design of Class F RF Power Amplifier with High Efficiency Performance

F类功率放大器的高效率研究与设计

Test data on the use of a low-calcium class F fly ash to control the structural deformations occurring in singly reinforced concrete beams undergoing alkali silica-reaction ASR are introduced.

本文介绍了国外在经历碱-硅反应（ASR）的单面配筋的钢筋混凝土梁中，用F级低钙粉煤灰来控制其结构变形的试验数据。

An Interphone power amplifier module with working band of 405~ 415MHz is developed successfully, using Class F switch mode power amplifier.

成功研制出工作频段为405～415MHz的对讲机功率放大器模块，采用F类开关功率放大器工作模式。