相比

In this paper,finite-difference time-domain method was used to calculate the driving-point impedance of radial disk in circular groove guide.

引言圆形槽波导是一种新型波导，和传统波导相比，具有低损耗、高功率容量、低色散和宽频带等优良特性。

Compared with the FFT-based computation to CAF, the presented method can scan the target only in certain circular sector instead of the whole ambiguity plane, which may decrease the computational load.

与基于FFT计算互模糊函数的方法相比，采用这种方法的优点是在检测目标时可以只扫描某个环形扇区而不用计算整个模糊平面，减小了计算量；另外，由于在计算互模糊函数时极角和极径的取样间隔可以任意选择，突破了时域采样间隔的限制，可在时延和频移上均得到高精度估计。

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。

In the early treatment stage of severe traumatic brain injury complicated with shock,HTS could effectively reduce ICP,improve blood perfusion of organs as comparied with MTS,the effects of which is quicker,safer and lasting.HTS could improve dynamic index of circulation caused by hemorrhagic shock,and correct relative pathophysiologic changes caused by shock.

HTS在重型颅脑外伤合并休克早期治疗中能有效降低ICP，改善器官血流灌注，且与甘露醇相比，起效更快，更持久和更安全，同时能改善失血性休克发生时的血流动力学指标和纠正休克引起的相应病理生理改变。

The quantitative analysis of the questionnaire presented that, compared with the low-proficiency learners, the high-proficiency learners significantly used more circumlocution and self-repair.

问卷量化分析之结果显示，与低分组学生相比，高分组学生显著地较常使用婉转词语及自我修正(self-repair)。

The more detail of researches and results are shown below:(1) In coverage planning of unknown environment, sliding algorithm is improved to incremental style, then it is combined with some strategies of circumnavigation and randomly walk etc.

相比于传统滑动算法，增量算法使得构型空间可以从局部逐渐构建，并且可用于多机器人系统，大大提高了效率。（2）设计了一种改进的基于近似Voronoi图的GVD算法。

With the rapid development of our country"s transportation and the implementation of the state"s the policy of the Great Development of the Western Regions, a great many tunnels will be built in elevations areas or circumpolar areas in the Big West. Compared with traditional tunnels in the cold area, these tunnels will take large size and require higher technology. Moreover, the extreme climatic conditions are very unfavorable for these tunnels.

随着我国交通事业的快速发展，特别是西部大开发和振兴东北经济政策的进一步落实，在西部的高海拔和北部的高纬度寒冷地区将陆续有大量的隧道建成，与以往寒冷地区的隧道相比，这些隧道的规模会更大、技术要求更高，而气候条件却更加恶劣。

Compared to 10 years ago we have many more options in terms of the ability to prevent progression to cirrhosis.

和10年前相比，在阻止肝硬化进展方面我们有很多的选择。

So far, the planning approval is rigorous, the city commissioned the conduct of regulation beyond reproach, but the part of developers is not in accordance with the approval before design and construction, they are ready to advance two sets of programs, the real implementation of the program with the submission of the program compared to the floor, not a narrow spacing, is to increase the extra space.

到目前为止，规划审批是严格的，委托的城市进行调控无可非议，但部分开发商不按照批准设计和施工前，他们准备提前两套节目，真正的实施计划，提交的计划相比，地板，而不是一个狭隘的间隔，是增加额外的空间。

America's largest annual survey of college freshmen portrays a class that is more civic-minded,more self-confident and more supportive of a range of conservative social values than students have been in past decades.

一年一度的美国规模最大的大学新生的调查显示，与过去几十年相比，现在的学生更热心于公益事业，更自信，更支持一系列保守的社会价值观。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。