查询词典 fir pine

Having investigated the design of classical FIR digital filter, the authors put forward a method of FIR filter design based on Chebyshev best uniform approximation which can be used to separate potential anomalies.

在对经典FIR数字滤波器的设计方法进行研究的基础上，提出了一种可以用于位场分离的基于Chebyshev最佳一致逼近原理的FIR滤波器的设计方法。

It is proposed that N-point FIR filter can be built by cascading of a two-pulse canceler and (N-1)-point FIR filter.

给出了部级鉴定会上的测试指标和专家们的评审意见。

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。

At all the shrub layer and herb layer plants, both widely distributed in the cloud belt elevation fir forest types, there is also limited to certain types of spruce-fir forest types.

在所有灌木层和草本层植物中，既有广泛分布于各海拔带云冷杉林中的种类，也有仅限于某一云冷杉林类型中的种类。

According to the design principle of the Nyquist filter of FIR, this article design a FIR filter which uses root raised cosine function of 33 taps.

本文根据奈奎斯特FIR滤波器的设计原理，设计了33阶根升余弦函数FIR滤波器，并提出了用FPGA实现其硬件电路的方案，最后用Modelsim和matlab工具进行了仿真验证。

The above ground biomassof black locust and cryptomeria stands takes a greater percentage of the totalbiomass than that of water fir and chinese fir stands.

在落叶期，水杉的林冠截留率明显较柳杉林小，而和刺槐林相近，但在盛叶期却明显较刺槐林高，而与柳杉林相近。

In application, to ensure the linear phase of image, FIR filter is usually chosen as it can realize the strict linear phase under the conditions. Designing FIR filer actually means solving a group of fine coefficients.

在应用中图像的处理要求不能有明显的相位失真，所以选用FIR滤波器，因为它在一定的对称条件下可实现严格的线性相位。

To solve the problem of analysis and computation during using a finite impulse response model with high orders, orthonormal basis functions are constructed by utilizing partial system information and then introduced into traditional FIR modeling. A generalized FIR modeling method is proposed.

为了解决高阶脉冲响应模型带来的分析和计算上的困难，利用系统的部分已知信息构造正交基函数，并将其引入到传统脉冲响应建模中，提出了一种广义脉冲响应模型辨识方法。

The female parents are 4 choice [1] ness clones in Chinese fir primary orchard. The male parents are 3 polyanthus clones in the gene pool of old Chinese fir, the mixed pollen of these clones and all the clones in this gene pool. The testing woods were founded with 18 cross grouping which were obtained by the using of NCⅡ.

以经过子代测定的杉木初级种子园中的4个优良无性系为母本，老杉木种质资源库中的3个花芽较多的无性系及其混合花粉和种子园混合花粉为父本，采用测交系交配设计进行杂交制种，获得18个杂交组合并以此营建试验林。

By the changing tendency of N, P, K, we coudle see N, P decreased significantly, especially P, the concentration of which was deficient for Chinese Fir nomal growing, but K nutrients were unnoted. So we suggestted increasing N, P fertilizer for Chinese Fir normal growing and might rise its yield.

由N、P、K的变化趋势可以看出，在杉木生长的整个周期，N、P含量降低明显，特别是P，其含量远低于杉木生长所需要的P含量的临界值，处于严重缺乏状态，K含量变化不明显，因此，建议在生产中增施N、P肥，以保证杉木正常生长，提高产量。

As of Tuesday, Google's results were still censored in China.

截至周二，谷歌的搜索结果仍受中国审查。

In order to make the positive action increase and negative one decrease, the sub-forces of the social factors must be adjusted to form a centripetal force.

在这一过程中，人的主体性发挥是社会有机体健康发展的灵魂。