查询词典 fir pine

The design of a FIR linear phase filter based onBP neural network algorithm is introduced, get the unit impulse response of the filter by training the wieght of the BP neural network.

摘 要：本文将BP神经网络算法应用于FIR线性相位数字滤波器的设计中，通过训练神经网络的权值，得到滤波器的单位冲激响应。

Heat release rate of the Chinese fir wainscot coated with polyurethane flame-retardant coating was studied,and the flame retarding properties were compared according to Federal Aviation Adiministration standards.

采用美国阿特拉斯公司生产的HRR3热释放率系统，按照美国航空标准要求测试经聚氨酯防火涂料处理的杉木壁板试件的燃烧热释放率并比较其阻燃性能。

Yule log, or small Yule log with 3 candles, evergreen boughs or wreaths, holly, ivy, fir trees, mistletoe hung in doorways, gold pillar candles, baskets of clove studded fruit, a simmering pot of wassail, poinsettias, christmas cactus.

标志：用圣诞木或是装点有三支蜡烛的圣诞木枝条，长绿植物的主枝干，在搭配上花冠，冬青树的枝条，常春藤、冷杉以及槲寄生的枝条，装成环状悬挂在门口；金色的蜡烛；满篮的石榴果；炉灶上冒着泡的美酒；猩猩木和圣诞仙人掌

The structural of mechanism adopted double pipes feed-in with mixing machine, special weighbridge for reducing bond; The hardware circuit make use of the programmable amplifier AD8555 which amplify the weak sensor signal and bridge imbalance compensation and gain error, at the same time,32-bit microprocessor LPC2134 was used as the core of the hardware to deal with the messages and send order to the implement machine. Software design transmits materiel by stages and FIR filter was adopted to remove big errors and enhance precision.

机械结构使用双管螺旋喂料机加搅拌机构，特殊的称斗结构；硬件电路采用数字可编程放大器AD8555作为称重传感器微弱电信号的放大器，以便于补偿桥式传感器的失调和增益误差，同时采用32位单片微处理器LPC2134作为整个电路的处理核心，及时处理称重信息，并向执行机构发送命令；软件根据称重值采取分阶段喂料，并加入了FIR软件滤波，滤除了粗大误差信号，提高了称重精度。

It is concluded, therefor, that reserving broad-leaved tree in Chinese fir plantation benefit the conservation of biodiversity that deserves wide-spreading.

说明栽杉留阔经营模式有利于生物多样性的保护，应值得大力推广。

I've thought of some pines or fir s as a windbreak划to cut down the erosion.

我想过种上些松树或冷杉，起防风林的作用，可减少土壤侵蚀。

Farther on he knew he would come to where dead spruce and fir, very small and wizen , bordered the shore of a little lake, the TITCHIN-NICHILIE, in the tongue of the country, the land of little sticks.

他清楚再往前走他就会到达一个当地人称之为"提奇因尼其利"意思是"小棍子地"的地方，那儿有一个小湖，周围有许多枯死的极细小的枞树。

In order to study the effects of acid catalysts on wood liquefaction in phenol, the liquefaction of wood powder from Chinese fir and poplar in the presence of phenol using several relatively weak acids as catalysts, such as phosphoric acid (85%), sulfuric acid (36%), hydrochloric acid (37%) and oxalic acid (99%), were investigated.

为了探讨酸性催化剂对木材苯酚液化的影响，该研究采用磷酸(85%)、低浓硫酸(36%)、盐酸(37%)、草酸(99.5%)4种弱酸性无机酸，在不同温度下进行了木材的液化试验。

Through FIR and SEM analyses, it was found that the silane coupling agent could react with the surface of wood flour, and the adhesive strength between HDPE and wood flour as well as the mechanical properties of the composite was improved.

通过FIR和SEM分析发现，硅烷偶联剂可与木粉表面发生化学反应，从而提高了HDPE与木粉的界面粘合强度，使复合材料的力学性能得以提高。

I soon found a way to convince him that I would do him no harm, and taking him up by the Hand laugh'd at him, and pointed to the Kid which I had kill'd, beckoned to him to run and fetch it, which he did; and while he was wondering and looking to see how the Creature was kill'd, I loaded my Gun again, and by and by I saw a great Fowl like a Hawk sit upon a Tree within Shot; so to let Friday understand a little what I would do, I call'd him to me again, pointed at the Fowl which was indeed a Parrot, tho' I thought it had been a Hawk, I say pointing to the Parrot, and to my Gun, and to the Ground under the Parrot, to let him see I would make it fall, I made him understand that I would shoot and kill that Bird; accordingly I fir'd and bad him look, and immediately he saw the Parrot fall, he stood like one frighted again, notwithstanding all I had said to him; and I found he was the more amaz'd, because he did not see me put any Thing into the Gun; but thought that there must be some wonderful Fund of Death and Destruction in that Thing, able to kill Man, Beast, Bird, or any Thing near, or far off; and the Astonishment this created in him was such, as could not wear off for a long Time; and I believe, if I would have let him, he would have worshipp'd me and my Gun: As for the Gun it self, he would not so much as touch it for several Days after; but would speak to it, and talk to it, as if it had answer'd him, when he was by himself; which, as I afterwards learn'd of him, was to desire it not to kill him.

可怜的星期五上次曾看到我用枪打死了他的敌人，但当时他站在远处，弄不清是怎么回事，也想象不出我是怎样把他的敌人打死的。可这一次他看到我开枪，着实吃惊不少；他浑身颤抖，简直吓呆了，差一点瘫倒在地上。他既没有去看我开枪射击的那只小羊，也没有看到我已把小羊打死了，只顾扯开他自己的背心，在身上摸来摸去，看看自己有没有受伤。原来他以为我要杀死他。他跑到我跟前，扑通一声跪下来抱住我的双腿，嘴里叽哩咕噜说了不少话，我都不懂。但我不难明白他的意思，那就是求我不要杀他。我马上想出办法使他相信，我决不会伤害他。我一面用手把他从地上扶起来，一面哈哈大笑，并用手指着那打死的小羊，叫他跑过去把它带回来。他马上跑过去了。他在那里查看小山羊是怎样被打死的，并感到百思不得其解。这时我趁此机会重新把枪装上了子弹。不久，我看见一只大鸟，样子像一只苍鹰，正落在我射程内的一棵树上。为了让星期五稍稍明白我是怎样开枪的，就叫他来到我跟前。我用手指了指那只鸟--现在我看清了，其实那是一只鹦鹉，而我原先把它当作苍鹰了。我刚才说了，我用手指了指那只鹦鹉，又指了指自己的枪和鹦鹉身子底下的地方，意思是说，我要开枪把那只鸟打下来。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。