查询词典 waves

Researched influence of frequency on characteristic of electromagnetic wave transmission in tunnels, and analyzed characteristic of electromagnetic wave transmission in circular, arches and curved tunnels by method of metal wave guide, and gives approximate formulas of attenuation rate. Main conclusions we obtain are as follows: in circular,rches tunnels, if frequency is higher, attenuation rate is smaller, it is beneficial for EM waves to transmit, in curved tunnel, higher frequency, more attenuation rate ...

研究了频率对井下电磁波传输特性的影响，采用金属波导法分析了圆形、拱形及弯曲隧道中电磁波的传输特性并给出衰减率近似公式，得出主要结论：在圆形和拱形隧道中，频率越高，衰减率越小，越有利于电磁波的传播；在弯曲隧道中，频率越高，衰减率越大，不利于电磁波的传播；通过特性曲线与井下实验数据相比较得出在900MHz左右为井下无线通信系统传输信号最佳频段。

Under the control of microprocessor, this product with an oscillating implement embedded in can produce mulriple-scanning pulse electromagnetic wave with variable frequency and mulriple frequency conversion ultrasonic. Electromagnetic wave can get rid of the pests around electrical wire and ultrasonic can dispel the pests in other areas of the room. The product sends out frequency conversion signal of ultrasonic to circumambience. Once touches objects, it reflects and permeates the room. The combining of the two waves has mulriple effects on the central nervous and hearing system of the pests such as rats, cockroachs, spiders and ants. As a result, the pests would be on the rack and agonizing or even have the symptom of swivet and twitch.

它由完全内置的震荡器，在微电脑的控制下可产生多重扫描变频脉冲电磁波和复合变频超声波，电磁波主要解决电源线周围害虫的问题，而超声波是要消除室内其余区域的害虫，它向周围发射的变频超声波信号，当它碰到物体会反射，从而能充满整个房间，这两种波迭加在一起所产生的双重功效，对老鼠、蟑螂、蜘蛛、蚂蚁等害虫的中枢神经及听觉系统进行多重干扰，令其感到极度不适，恐慌不安，甚至表现出狂乱、抽搐等症状，并能使其丧失繁殖能力，迫使其逃离原地，从而达到驱赶害虫的目的。

In the game, and what ZhangZhao waves become my best friend, I also get first friendship, and friendship in interesting game became clear...Of course, not a friendship.

在游戏里，张钊和何浪成了我最好的朋友，也是我得到第一份友谊，而这份友谊就在有趣的游戏里渐渐清晰……当然，友谊不止一份。

I flow by valleys seeing birds sing and flowers radiate their fragrance; I walk by grassplot hearing insects and frogs sing.I walk by fencing seeing the first verdure on top of twigs.I flow into wellspring and become cliffside waterfalls to wash and dress up ridges and peaks;I flow into rivers and become sprays to sing fair-sounding love songs for the rocks on the shores.I flow into lakes and become blue soft waves to be stay together with green hills to receive sunrising and moondown. Finally, I come to you to wait for your acceptance.

我流经山谷，看过鸟语花香；我走过草地，听过虫鸣蛙鼓；我走过篱落，看过枝头的第一抹新绿；我汇入泉源，化作飞泉瀑布，给峰峦梳洗打扮；我汇入江河，化作浪花朵朵，给岸边的岩石唱起动听的情歌；我汇入湖泊，化作温柔的碧波，和青山一起，共同迎接日出月落；最后，我来到你面前，等待你的接纳，我想你是海，你一定不会因我的渺小而拒绝我的到来。

Please allow me to conclude my speech by reciting two lines from a Chinese poem in eulogy of the charms of the West Lake: Sparkling and billowing, the waves delight only on a sunny day; Cloud-shrouded, the knolls can be enchanting even in the rain.

在21世纪的今天，在经济加快融入全球经济的同时，我们正以更开放的胸襟、兼容的态度和科学的精神对待外国文化，汲取人类的一切优秀文明成果。

Nevertheless, to these 4 poineering patriarch, solid it may be said is " brandish waves, do not take away one cloudlet colour ".

不过，对于这四位创业元老而言，实可谓是"挥一挥手，不带走一片云彩"。

Postmeridian Jinan, the colour of a few cloudlet that waves, sweep breeze, the satisfied scenery that admiring fontal city all the way along moat, will achieve century edifice 609 in win-win of look forward to.

午后的济南，飘来的几朵云彩，刮起微风，舒服的沿着护城河一路欣赏着泉城的景色，来到创世纪大厦609--中企共赢。

Attenuation measurements of coda and shear waves have been made by digital data recorded in Tengchong volcano area.

用云南腾冲火山地区观测的地震数字化记录进行了尾波和剪切波的衰减测量。

Guglielmo Marconi, recognizing the possibility of using these waves for a wireless communication system, gave a demonstration (1895) of the wireless telegraph, using Hertz's spark coil as a transmitter and Edouard Branly's coherer (a radio detector in which the conductance between two conductors is improved by the passage of a high-frequency current) as the first radio receiver.

Guglielmo Marconi，认可使用这些波浪的可能性为一个无线通信系统，给了一次示范(1895)无线通信机，使用赫兹的火花卷因为发射机和Edouard Branly 的coherer (导率在二个指挥之间被高频率潮流段落改进)的一台无线电探测器如同第一无线电接收机。

By using the meshless method, a numerical ocean engineering basin was established to simulate irregular waves propagated in shallow water. Locating the source points outside the computational domain, the problem of water wave propagation was solved by collocation of only a few boundary points instead of meshes.

采用基于配点和径向基函数的无网格数值模拟方法，建立数值海洋工程水池，将源点布置在模拟波浪场之外，沿边界布置配点而不是划分网格；对深水不规则波经斜坡过渡后在均匀水深浅水域中传播的过程进行无网格数值模拟和波谱的迭代修正。

If you were not , and OS X just booted normally, have no fear.

如果你没有，和OS X刚刚启动通常，没有恐惧。

I only want to preserve our all .

我只想保存好我们的一切