fh

FH-40 C light fraction hydrofining catalyst is developed by Fushun Research Institute of Petroleum and Petrochemicals ( FRIPP ).

FH -40C 是抚顺石油化工研究院开发的轻质馏分油加氢精制催化剂.

SNB , NP-FH , and SN-MP were increased by 1.56 ( P < 0.01 ), 2.66 ( P < 0.01 ) and 2.31 ( P < 0.01 ), respectively.

NP -FH 增加2.66 ( P<0.01 ), NA-PA 减少3.87 ( P<0.01 ),SN-MP增加2.31 ( P<0.01 ), 颌骨间矢状和垂直关系的不调得到明显改善.

The simulation results show that the algorithm meets the requirements of FH communication systems.

仿真结果表明,该算法满足跳频通信系统的要求.

To study the different characteristics and changes of fetus ? hydronephrosis ( FH ), and prevent unnecessary induced abortion.

目的:研究胎儿肾积水的不同特点及转归, 防范不必要的中止妊娠.

Performance analysis of block turbo code in short wave FH system with the barrage jamming

短波跳频系统中分组Turbo码在阻塞干扰下的性能分析

Implementation of an Lx Band FH Signal Generator

一种Lx频段跳频源的实现

It inherits the anti multipath fading ability of OFDM systems and anti-interference of FH technology.

它同时兼有正交频分复用系统能有效对抗多径衰落和跳频技术抗干扰性能好的优点.

Actual test shows this receiver is able to accomplish the task of automatic reception of FH signals.

经实际测试，该接收机能完成跳频信号自动接收的任务。

The synchronization system of Frequency-Hopping ( FH ) station requires well anti-jamming and security performance and quick synchronization.

跳频电台同步系统要求具有良好的 抗干扰性能 和保密性能,同时达到快速同步.

Based on the queuing theory, Logistic mapping and Tent mapping, this paper presents a new method for generating the chaotic FH sequences through mixed mapping in order to increase the linear complexity and anti-prediction of chaotic FH sequences.

基于队列理论、Logistic映射和Tent映射，从增大跳频序列的线性复杂度和抗预测性出发，提出了利用队列排序方式产生混合混沌映射跳频序列的方法。

Simulation of Hybrid DS/ FH Spread Spectrum Technique in LEO Satellite Telemetry& Control Link

混合扩频技术在低轨卫星测控链路中的仿真

Based on the 3DES block cipher frequency-hopping ( FH) sequences, the paper suggests a kind of packet protocol for frequency-hopping multiple-access ( FHMA) networks.

基于3DES迭代型分组密码产生的跳频序列，构造了一种跳频组网的随机多址接入方案模型。

Based on the performance and features of half-duplex FH radio sets, the data link layer protocol includes Control frame, Information frame and Acknowledgement frame, carries out the ARQ plan which combines the Select Repeat ARQ and Stop-and-Wait ARQ together.

数据链路层的协议，构造了控制帧、信息帧、应答帧，设计了选择重发和停等协议相结合的ARQ方案，支持自适应变速的功能。

FH-OFDM is a technology that combines frequency-hopping ( FH ) and Orthogonal Frequency Division Multiplexing ( OFDM ) .

跳频 - 正交频分 复用系统 是一种把跳频通信和正交频分复用相结合的技术.

Additionally, jamming for FHSS system mainly affects the synchronization of FH pattern and the judgment of integral of demoded signal to degrade its performance.

此外，对跳频系统的干扰主要影响跳频图案的同步以及解调时的积分判决，因而，如何抑制干扰成为提高系统抗干扰性能的关键。

Synchronization is the key technique of DS/ FH hybrid communication system.

同步是DS/FH混合通信系统的关键技术之一。

As the Beidou satellite navigation system, it is possible to use the time service as the source of synchronization referrence in Tactics FH radio.

随着北斗卫星导航系统的正式运营，利用北斗无源授时服务提供的时钟作为战术跳频电台的同步参考时钟成为了可能。

Conclusions FH is an euchromosome dominant genetic disease that is caused by the defective LDLR resulted from gene mutation.

结论：FH是一常染色体显性遗传性疾病，为基因突变导致LDLR缺陷所致的遗传性疾病。

SNB , NP-FH , and SN-MP were increased by 1.56 ( P < 0.01 ), 2.66 ( P < 0.01 ) and 2.31 ( P < 0.01 ), respectively.

NP -FH 增加2.66 ( P<0.01 ), NA-PA 减少3.87 ( P<0.01 ),SN-MP增加2.31 ( P<0.01 ), 颌骨间矢状和垂直关系的不调得到明显改善.

FH-02 does not affect the working performance of four crude oil demulsifiers presently used.

FH-02不影响现用4种原油破乳剂的效能。表6参7。

Spread-frequency communication is a new kind of techniques one of which is Frequency-hopping ( FH ) .

扩展频谱通信 是一种新的通信方式.跳频通信是 扩展频谱通信 中的一种.

Since F3, the tetraploidy was maintained from one generation to another and to date FH allotetraploid hybrids were produced ( F:!-FM) and a stable and new allotetraploid fish population was formed.

目前四倍体鲫鲤已连续繁殖了12代（F3-F（14）），形成了一个稳定的新的四倍体鱼繁殖群体。

Application of Spud Mud Composite Additive FH-2 in Huabei Oil Field

钻井液用开钻复合剂FH&2在华北油田的应用

Implementation of inter-pulses Costas FH high resolution MMW radar signal using DDS Technology

脉间Costas FH高分辨毫米波雷达信号的DDS实现

The generator of adaptive FH pattern is designed. By using it and the result of the LQA, adaptive frequency selection is accomplished.

设计了自适应跳频图案发生器，利用信道质量评估结果，完成了自适应频率选择。

FH composite fire retardant for PP tufting carpet using in back-coating latex have been presented.

研究开发了FH复合阻燃剂,用于背衬胶乳阻燃法阻燃丙纶簇绒地毯.

These two bounds are compared with an existing NHZ FH sequences bound, showing that the second bound proposed in this thesis is tighter than the others.

论文将这两个理论界与目前已有的另一个NHZ跳频序列理论界进行了比较，分析和数值结果表明，本文提出的第二个理论界比其他两个界更紧。

A Study of the Measuring Method for the Limit PV Curve of Bearing Guide Material FH& 857

支承环材料FH&857的极限PV曲线测试方法研究

An anti-jamming satellite communication system with high Gp based on OBP de hopping for multi FH as a whole

基于星上多路整体解跳处理的高增益抗干扰卫星通信系统

DS/ FH hybrid spectrum spread technology takes both advantages of DSSS and FHSS, which has more powerful performance in anti-jamming and anti-intercepting.

DS/FH混合扩频技术综合了DSSS和FHSS两种扩频方式的优点，具有更强的抗干扰、抗截获能力。