It turns out at that time of the year, in the summer, that birch was sending more carbon to fir than fir was sending back to birch, especially when the fir was shaded.
结果还表明在每年的这个时间，在夏天的时候，纸皮桦给花旗松送的碳比花旗松反送给它的要多，特别是当花旗松见不到阳光的时候。
Representative mixed plantations A, B of Cyclocarya paliurua Ilinsk and Chinese fir and pure stand of Chinese fir in Xiqin Experimental Forest Farm were selected, and their biomass was determined.
在西芹林场选择有代表性的青钱柳、杉木混交林A、B两种和杉木纯林，进行生物量测定。
The paper based on a comparison research between resin impregnation treated Chinese fir and untreated Chinese fir, concerning the characters of shrinkage, swelling and water absorption.
对酚醛浸渍处理杉木与杉木素材的干缩性、湿胀性、吸水性能进行了对比研究。
The fir essential oil was extracted from fir root by steam distillation method, from which cedrol was extracted, and then, cedrol methyl ether was synthesized based on cedrol.
以杉木根为原料通过水蒸气蒸馏法提取杉木精油，从杉木根精油中精制提取柏木脑，再以柏木脑为原料合成甲基柏木醚。
A novel fast algorithm for FIR filter is presented, the large computational volume of FIR filter with many taps is lowered down.
提出了一种新的FIR滤波器快速算法，显著降低了实时信号处理中的长阶数FIR滤波器的运算量。
A new parallel FIR filter based on the iterated short-convolution algorithms (ISCA) is designed with the structure of multi-stage small size parallel sub FIR filters.
在并行fir的快速迭代短卷积算法(ISCA)基础上，采用多级小尺寸并行fir结构级联结构，实现了一种新型并行FIR滤波器。
According to digital FIR filtering theory, analyze and compare the methods of designing FIR filter.
根据FIR数字滤波器理论，分析比较实现fir滤波器的方法。
After investigating into the design of classical FIR digital filter, a method of FIR filter design based on proximate best uniform approximation is proposed.
在对经典FIR数字滤波器的设计方法进行研究基础上，提出了一种基于近似最佳一致逼近原理的FIR滤波器设计方法。
Starting from FIR signal theory a mathematical model for the optical FIR filter is established, and the mapping relation between the model and FIR filter is analyzed.
从FIR信号理论出发，建立了光学FIR滤波器数学模型，并分析了它与FIR滤波器的映射关系。
The coefficients of the FIR transversal filter was identified by using adaptive RLS algorithm while the output signal of the vibration pick-up was input into the FIR transversal filter.
该方法是将拾振器的输出信号作为FIR横向滤波器的输入，用自适应rls算法对FIR横向滤波器系数进行辨识而最终获得可以恢复拾振器原始输入信号的反卷积滤波器。
To improve the synthesis frequency, changes are made to the filter processing element. With pipelined vertical FIR and revised 2-level diagonal FIR, the corresponding delay path can be shortened.
为了提高综合频率，本文提出了对滤波处理单元的改进，采用流水线输入的竖直滤波器和改进的2级对角滤波器可以大大缩短导致的延时路径。
On the base of FIR digital filter design using building blocks, a new design method for FIR digital filter is presented.
在模块法设计FIR数字滤波器的基础上，提出一种设计FIR数字陷波器的新方法。
This paper introduces a method for FIR digital filter design. To compute and plot by using the frequency-sampling method and MATLAB makes the design of an FIR digital filter convenient.
介绍了FIR数字滤波器的设计，采用频率采样法，运用MATLAB完成设计中的计算和图形绘制，使其变得简单、快捷。
Has analyzed the FIR digit filter's basic principle, designs the FIR low pass filter under the MATLAB environment using the window box number, has realized the low pass FIR filter's design simulation.
分析了FIR数字滤波器的基本原理，在MATLAB环境下利用窗函数设计FIR低通滤波器，实现了FIR低通滤波器的设计仿真。
This paper constructs one filter design system which covers 4 types of FIR filters—family of all-phase FIR filter.
本文构建了一套完整的包含四种类型FIR滤波器的设计体系—全相位FIR滤波器族。
A new fast algorithm was proposed in order to solve the problem that the FIR impulse of odd points can only use inefficient MAC instruction in DSP FIR filter's design.
针对DSP领域中使用奇数个点的FIR冲击响应设计滤波器时，只能使用效率较低的MAC指令的问题，提出了一种新的快速算法。
A new fast algorithm was proposed in order to solve the problem that the FIR impulse of odd points can only use inefficient MAC instruction in DSP FIR filter's design.
针对DSP领域中使用奇数个点的FIR冲击响应设计滤波器时，只能使用效率较低的MAC指令的问题，提出了一种新的快速算法。
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