firs

Community vertical structure levels of the five firs are clear .

5种冷杉的群落垂直结构层次均明显。

Any of various true firs having leaves white or silvery white beneath .

冷杉属中长有白色或银白色叶子的植物。

This is how one American traveller described his firs experience in watching Beijing Opera .

一位美国旅行者这样描述他观看京剧的经历。

The crow had perched upon a fir . She seemed to have steeled down to enjoy her provender with mouth half-closed , the dainty bit still in it .

于是，乌鸦高高地躲在枞树的树梢，似乎要安顿下来开始享用美味。但是嘴里含着那一小块奶酪，心里还要思量一番。

Research and Design of Efficient FIR Filter in Software Radio System

软件无线电中高效FIR滤波器的研究与设计

Study on comprehensive benefits of different cutting ways of Chinese fir

杉木人工林不同采伐方式综合效益研究

FIR Filter Design Based on All Phase Symmetric Frequency Sampling Method

全相位偶对称频率采样法设计FIR滤波器

The Feed back Control System With FIR Digital Filter

采用FIR数字滤波器的反馈控制系统

An Application of Genetic Algorithms in FIR Filter Design with Frequency Sampling Method

遗传算法在FIR滤波器设计&频率抽样法中的应用

Variable Density Volume Prediction Model for Chinese Fir Based on Artificial Neural Network

基于人工神经网络的杉木可变密度蓄积量收获预估模型

Study on the Building Techniques of Old China Firs ' Gene Bank

老杉木基因库营建技术的研究

A preliminary analysis on genetic variance component of Chinese fir

杉木遗传变异组成试析

A numerical method for computing the phase difference of fir interferometer

一种计算远红外干涉仪相位差的数值方法

Surface Performance of Chinese Fir Wood Treated by Microwave Plasma

微波等离子体处理对杉木表面性能的影响

A New Design Method for FIR Digital Trap Filter by use of Building Blocks

模块法设计FIR数字陷波器的一种新方法

The Design of a Linear Phase FIR Digital Filter

线性相位FIR数字滤波器

Study of linear phase FIR digital filters using non-ideal frequency characteristic models

用非理想频率特性模型设计线性相移非递归型（FIR）数字滤波器的探讨

A Design Method for Log FIR Digital Filter

一种设计对数FIR数字滤波器的方法

Study of High Temperature and Normal Temperature Drying of Chinese Fir Board in Plantation

人工林杉木板材高温和常温组合干燥研究

A Study on Spatial Distribution Patterns of Decadent Disease of Chinese Fir

杉木立木干基腐朽病空间分布型的研究

Directive Culture Forecasting Patterns of Physical and Mechanical Chinese Fir Wood

杉木短轮伐期工业材物理力学性质预测模型的研究

Studies of the Physical Properties of Clone Chinese fir Wood

无性系杉木木材物理性质研究

Evaluation on the Stability of Seed of Chinese Fir Seed Orchard

杉木无性系结实稳定性的评价

A test on genetic effect of elementary seed orchard of Chinese fir

杉木初级种子园遗传效应的一个验证

Contrast Test of Breeding After Seed Soaking in Different Time for Chinese Fir

杉木种子不同浸种时间育苗对比试验

A Comparative Study on photosynthetic Characters of Different provenances of Chinese Fir

不同种源杉木光合性状的比较研究

Research and Design of Narrow Band FIR Digital Filters

高效窄带FIR滤波器的设计与研究

Studies of Nutrient Dynamics of the Second Generation of China fir Plantation

第二代杉木林养分动态研究

A real-time harmonic detection system based on adaptive FIR predictive filter is presented .

提出了基于自适应有限脉冲响应（FIR）预测滤波器的谐波实时检测系统。

Application of NATURE-APPROXIMATING FORESTRY management method in young Chinese Fir Plantation

近自然林业经营法在杉木人工幼林经营中的应用