fir

noun

1. 枞；冷杉
   an evergreen forest tree with leaves like needles, that grows in cool northern countries

1. 冷杉;枞
   A fir or a fir tree is a tall evergreen tree that has thin needle-like leaves.

1. Abstract: china fir were planted at the soils from different rocks by the experimental ecological method.
   文摘：在不同岩性土体上进行了杉木栽植的研究。
2. Master window function with the FIR digital filter design theory and methods.
   掌握用上述窗函数法设计FIR数字滤波器的原理和方法。
3. This is a very small fir tree, decorated with silver paper and coloured lights.
   我是一棵用银光纸和彩灯装饰的小小的冷杉树。
4. Effects of Grading Methods on Dimension Lumber Grades for Chinese Fir Plantation
   分等方法对我国人工林杉木规格材等级的影响
5. A new strategy was proposed for constructing linkage maps for 1 ∶ 1 segregation molecular markers in Chinese fir.
   对于杉木1∶1分离的分子标记位点，提出了一种新的构建遗传连锁图谱的策略。
6. The birds built their nest in the small fir tree.
   鸟在小冷杉树上搭巢。
7. A new application of genetic algorithm in FIR filter with weighting Chebyshev optimal approximation method is presented.
   介绍了一种遗传算法在FIR数字滤波器设计&加权切比雪夫最佳逼近准则优化设计方法中的应用。
8. Research on the Fertilization of Chinese Fir Seed Orchard
   浙粤两省六个杉木种子园施肥技术和效应研究
9. This filter has been applied in a high-speed DAC chip as an interpolation filter.
   该文所设计的FIR滤波器，已作为内插滤波器应用在一种高速D/A转换芯片中。
10. The Design and Study of Stability for FIR and IIR Digital Filters
    FIR和IIR数字滤波器的设计及稳定性研究
11. The most common construction woods are Douglas fir, hemlock, spruce, pine, and some cedar.
    最常用的木料是道格拉斯冷杉，铁杉，云杉，松木以及其他一些杉木。
12. The structure chart of FIR algorithm realizing is also given.
    在这里还给出了实现FIR算法的结构图。
13. With the tall fir trees, the snow and the storks.
    有高大得枞树，雪和鹳。
14. A robust algorithm for FIR adaptive filters based on the quasi-Newton class of optimization algorithm is described.
    基于拟牛顿优化方法，提出了一种稳健的自适应FIR滤波算法。
15. Mass loss rates of fir leaf litter appeared consistent with the taxa and individual relative density of soil fauna.
    不同孔径凋落物袋内土壤动物的类群和个体相对密度与凋落叶的质量损失率呈现相对一致的变化趋势。
16. The Analysis of FIR Digital Filter in Time and Frequency Domain
    FIR数字滤波的时域和频域物理分析
17. Effects of root system and litter of Chinese fir on soil microbial properties
    杉木根系和凋落物对土壤微生物学性质的影响
18. They were deglycerolized by alternately centrifuging and mixing; he planted fir and pine trees alternately.
    交替运用离心法和混合法来除去他们的甘油渍；他交叉种植冷杉和松树。
19. The softwoods are such trees as pine, fir and spruce.
    松、冷杉、云杉一类的树木是软木材。
20. A new structure of partly serial FIR filter is advanced in the design.
    提出了一种新型的低延迟的部分串行结构的FIR滤波器设计方法。
21. At first, a parallel structure of the FIR filter is presented based on polynomial decomposition method.
    本文首先从多项式分解角度给出一种FIR滤波器的并行结构。
22. In this paper the application of GA in FIR filter design with frequency sampling method is presented.
    本文介绍了遗传算法在频率抽样法滤波器设计中的应用；
23. The pine and fir are coniferous trees.
    松树和枞树都是结球果的植物。
24. The study provided the basis for the site classification of China fir in which rock must be considered.
    本研究为南方山区杉木立地分类中应重视岩性因子提供了依据。
25. This is possible to be an important cause for degradation of most Chinese fir ecosystems.
    这可能是大多数杉木人工林生态系统发生严重退化的一个重要原因。
26. The growth of spruce and fir needles is determinate.
    云杉和冷杉的针叶生长是有限的。
27. The essence of this paper is to analyze and design the multi-way FIR filter by using the structure of RAM which saves a great deal of register resources.
    文中重点对采用RAM结构实现多路滤波器的方法进行了分析和设计，该方法节省了大量寄存器资源；
28. Douglas fir of coniferous tree and beech of broadleaf tree is selected as the experiment materials.
    选择针叶材花旗松和阔叶材山毛榉作为实验材料；
29. The most widely used is linear, time-invariant digital filters, and IIR and FIR filters.
    应用最广的是线性、时不变数字滤波器，以及IIR和FIR滤波器。

noun

1. any of various evergreen trees of the genus Abies

   Synonym:    fir treetrue fir

2. nonresinous wood of a fir tree