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fir

美 [fɜr]英 [fɜː(r)]

n.冷杉；枞
abbr.(=food-irradiation reactor)食物辐射(杀菌)用反应堆
网络有限脉冲响应(Finite Impulse Response)；枞树(fir-tree)；远红外线(far infrared ray)

复数：firs

fir

权威英汉双解英-汉英-英网络释义

fir

例句：

I glance up to see an iridescent-green hummingbird hunkered down on a fir branch , sheltered against the Tree 's trunk .

我抬头看见一只泛着虹彩的绿色蜂鸟栖息在一棵冷杉的枝上，藉树干为它遮挡风雨。

The FIR filter has the distinct advantages that it has linear phase characteristics and is always stable for numerical computations.

有限冲激响应（FIR ）滤波器的优点是具有精确线性相位而且总是稳定的。

I glance up to see an iridescent-green hummingbird hunkered down a fir branch , sheltered against the tree 's trunk .

我抬起头，瞥见一只绿莹莹的蜂鸟落在一棵毛榉树枝上，凭借树干避着风雨。

Our unit concentrated in the forest and for a few days we had slept on the fir -twigs by the campfire .

我们的单位集中在森林中，我们已经在围在冷杉枝点燃的篝火旁度过了好几个夜晚。

He came round the back of the fir tree, and nearly tumbled upon the top of his Cousin Peter .

他绕到杉树的后面，差不多要见到他表兄弟彼得的头顶了。

around a bit , and as I grew more comfortable in my new shoes , began looking for animal tracks among the fir trees just off the trail.

我们转了一会儿，当逐渐适应我的新鞋时，我开始在杉树林中搜寻新鲜的脚印。

I'm home now . The weather has turned. The wind is howling through the fir trees on the edge of my bluff.

我回到家中，天气变了，风呼啸着穿过断壁边的冷杉林。

The company's products are mainly made of paulownia , as well as fir, pine and other kind of timbers .

本公司产品以桐木为主，兼有衫木、松木和其它木材。

It is usually of high a pine or of fur a fir . It remains green during the cold , dark months of winter in the northern part of the world.

这种树最常见的就是松树和冷杉，在北半球寒冷、阴暗的冬天那几个月它们也能保持青绿。

Norway : Two small fir trees are set on either side of the door to the couple 's house until they are blessed with a child .

挪威：新婚夫妇的房门两旁放置两棵小冷杉树，直至新婚夫妇喜得贵子。

Christmas tree in general is sort of evergreen fir Bo made a symbol of life forever .

圣诞树普通是用杉柏之类的常绿树做成，意味生命长存。

Chinese fir is one of good tree species during establishing anthropogenic vegetations on red earth in low hills .

杉木是低丘红壤地区人工植被建造的优良树种。

The Fir tree was put into a large room . He looked around the room curiously. Soon after, many servants and young girls came in.

枞树被安置在一个大房间里。他好奇地打量着房间里的一切。不久，许多仆人和小女孩们走了进来。

The 20 -foot Fraser fir from North Carolina will be set up in the Blue Room of the White House .

这个 20 英寸的北方香脂冷杉来自北卡罗莱纳州，它将被安置在白宫的一间蓝屋里。

I addressed the fir tree she loved and the wind moving in it. "Please keep her safe for me. "

我又和她所钟爱的冷杉树，以及那拂动树枝的寒风说道，“请替我照顾好她。”

Fir Christmas trees are generally evergreen cypress and the like made of a symbol of life forever .

圣诞树一般是用杉柏之类的常绿树做成，象征生命长存。

If the fir trees are cut down at a faster rate than new trees are planted and allowed to mature , the stock of fir trees will go down .

同样在这里，如果杉树砍伐的速率比种植树木的速率快，并允许它们成熟生长，则杉树的积存量将下降。

through here , he said , looking penetratingly into the dense fir - trees , that were young and not more than half - grown.

他一边说，一边尖锐地望着浓密的小杉树丛中，这些小松树还没他们一半高。

Ukraine - Fir trees are decorated and parties enjoyed, with Christmas being a very popular time of the year .

乌克兰 -装饰杉树，许多人一起狂欢，这是一年中最热闹的时候。

A player placed a fir cone or stick against his ball to prevent the ball from moving when he moved some loose impediments .

当一名球员移动散置障碍物的时候，他放了一个冷杉果或一根小棍靠在球上，以免球移动。

Merely , the branch of a fir tree that touched my lattice , as the blast wailed by, and rattled its dry cones against the panes !

只不过是在狂风悲叹而过时，一棵枞树的枝子触到了我的窗格，它的干果在玻璃窗面上碰得嘎嘎作响而已！

Generalized inverse matrix can be used to get an inverse system of the last FIR filter . The inverse system is also a FIR filter.

最后，利用广义逆矩阵的定义将小波分解算法中的 IIR 滤波器转化成两个级联的 FIR 滤波器。

Ki energy in humans moves like light and electricity with a wave length of 5-25 microns , amazingly similar as the wave length of FIR.

文能源如同光线和 5-25 微米的，令人惊讶的远红外线波长相同波长电力人类动作。

One of the most popular is the evergreen tree . It is usually a pine or a fir .

其中最普遍的就是长青树，通常是松树或是冷杉。

fir

fir

有限脉冲响应(Finite Impulse Response)

冷杉

枞树(fir-tree)

远红外线(far infrared ray)

有限冲激响应

飞儿乐团

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