查询词典 echo-location

Key words］ contusions;spine;gradient recalled echo

关键词］挫伤；脊椎；梯度回波

We employ a computer to simulate the characteristics of objects and circumstance, and calculate radar video echo date, then through computer inter-face circuit and the relative circuit and D/A conveners, the echoes are outputted to a radar signal processor. The video signal simulator can be use to debug a terminal homing radar system instead of the former part of radar.

该模拟器通过计算机模拟目标和环境特性，产生雷达视频回波信号数据文件，然后通过微机接口电路、回放电路和D／A变换输出该视频信号，接至雷达信号处理机；它可以代替雷达前端对末制导系统进行调试；实验结果验证了该模拟器的有效性。

" Network music grand ceremony " after a success is held, good echo was brought in the society, net gain is met this year will continue with limited company of transmission of culture of Beijing art letter gives full cooperation, continue with " musical regression " as mobile theme, exert oneself disentombs the outstanding music talented person that has actual strength most, those who make people love is former start musical work, the vitality with new infuse of happy for Chinese popularity altar, promote the development with orderly health of network culture industry.

网络音乐盛典》活动继上一届成功举办之后，在社会中带来了良好反响，今年网博会将继续与北京艺飞鸿文化传播有限公司通力合作，继续以&音乐的回归&作为活动主题，着力发掘最具实力的优秀音乐人才，打造大众喜闻乐见的原创音乐作品，为中国的流行乐坛注入新的活力，推动网络文化产业健康有序的发展。

These doubtings have no echo in the field.

在战场上，这些疑虑并没有得到响应。

As the characters showing, the start of storm trailed off, the height of the top and the strong center of echo falling down indicates the downburst begin.

3多起下击暴流过程发生时回波顶、强回波中心高度下降，表明风暴减弱的开始是下击暴流开始形成的显著特征。

Some reports show that the feature of ECUS of HCC is very typical, which is fast enhancement during the arterial phase and fade away during the portal venous phase and low echo in the delayed phase. This situation is called "fast in fast out".

研究表明，原发性肝癌超声造影表现上具有特征性，主要以动脉相快速整体型增强为主，持续时间较短，在门脉期即呈低回声改变，总体呈现&快进快出&的改变。

Methods To observe the common carotid artery and its bifurcation, the internal carotid artery, external carotid artery intima-media thickness, plaque echo and hemodynamic changes.

方法观察颈总动脉及其分叉处、颈内动脉、颈外动脉内中膜厚度、斑块回声及血流动力学改变。

Objective To evaluate the effects of simvastatin on the vascular elasticitv in fat-fed rabbits by echo-trackingtechnique.

目的 探讨血管回声跟踪技术评价辛伐他汀干预高脂喂养兔血管弹性的效果。

humans history of science development as it were a history of learning from other being.from bat to echo locator,from leaves array to sydney opera house,all of these outcome are coming from creature.bees build hexagonal honeycomb to use space as fully as possible ,which is very scientific.ants can build complex hole to feed babies,transport and store 美容 in small and limited space.by researching honeycomb and ant city,the city plot sign can make use of 食品 conclusion.

人类的科技发展史可以说是一部向其他物种不断学习模拟的历史。从蝙蝠到回声定位仪、从鸟类到波音747、从树叶的排列到悉尼歌剧院，无疑不是向生物学习的结果。蜂巢是通过六边形的蜂房来实现了对空间的最大利用，毫不浪费（因为圆形总是会有空隙，而方形又不节省材料，所以介于它们之间的形状充分综合了二者的优势）。蚂蚁穴是庞大的蚂蚁群在极小的空间中构筑的复杂巢穴，能满足其哺育后代，运输贮存食物等功能，并且是井井有条。

This article proposed one kind of improvement algorithm in this foundation, this algorithm has defined a filter balance factor formula, according to this formula, we readjustment filter balance factor value appropriately, through controlsling the LMS filter coefficient's freezing and the restoration, we solute echo puzzle perfectly; In the telephone condition examination algorithm aspect, in view of the busy signal examination algorithm which has has only been able to examine the busy signal, but cannot examine the dial tone, hang the staccato the deficiency, this article improves its algorithm to enable it to apply these aspects, make it can be better used in the actual system application.

本文在此基础上提出了一种改进算法，该算法定义了一个滤波器平衡因子的计算公式，根据此公式，适当调整滤波器平衡因子的阀值，通过控制LMS滤波器系数的冻结和恢复，很好的解决了回声的困扰；在话机状态检测算法方面，本文针对已有的忙音检测算法只能检测忙音，而不能检测拨号音、挂断音的不足之处，研究改进其算法使之能够应用到这些方面，更好的为实际系统的应用服务。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。