最接近的

In order to complete the investigation, impersonality feasible experiment solutions and devices are designed independently to systemically investigate on activation and transfer characteristic of soil heavy metal under acid rain effect. Primary results are shown as followings:1. PH measuring results of soil solution and eluviation solution show that the ability of experimental plot the acid buffer capacity of soil is stronger under the experiment condition,there is no obvious acidification in soil which after acid rain eluviation.The result has substantial differences with that gotten by most of investigationers in similar work before.

这一结果与以往类似研究中多数研究者得到的结论存在本质区别，原因可能在于此次试验的试验条件与以往研究的试验条件不同，其中最主要一点是在本次试验中使用的土壤样品的重量比以往试验均显著增大，而且使用的是土壤结构和组成等均未经破坏的原位土，从而使入渗酸雨与承受酸雨沉降的土壤之间的比例关系更接近自然酸雨沉降过程，以此为基础得到的试验结果应该更加客观、可靠。2、酸雨对盐基离子活化迁移产生的影响勿庸置疑，但是，在盐基离子活化迁移的过程中，并没有出现预想中的重金属元素活化迁移现象，表明土壤中的重金属元素并不如理论分析的那样对酸雨沉降反应敏感。

I must live like an exile, if I approach near to people a hot terror seizes upon me, a fear that I may be subjected to the danger of letting my condition be observed - thus it has been during the past year which I spent in the country, commanded by my intelligent physician to spare my hearing as much as possible, in this almost meeting my natural disposition, although I sometimes ran counter to it yielding to my inclination for society, but what a humiliation when one stood beside me and heard a flute in the distance and I heard nothing, or someone heard the shepherd singing and again I heard nothing, such incidents brought me to the verge of despair, but little more and I would have put an end to my life - only art it was that withheld me, ah it seemed impossible to leave the world until I had produced all that I felt called upon me to produce, and so I endured this wretched existence - truly wretched, an excitable body which a sudden change can throw from the best into the worst state - Patience - it is said that I must now choose for my guide, I have done so, I hope my determination will remain firm to endure until it please the inexorable Parcae to bread the thread, perhaps I shall get better, perhaps not, I am prepared.

我不得不活着像个流放的人，要是我接近人群，恐惧就会涌上心头，唯恐别人发现我病情。半年来我就是这样过来的。一位高明的医生让我尽量避免使用听觉，而也差不多正合我愿，所以这半年来我一直呆在乡下。不过，有时我也会违背医嘱，忍不住想与别人交往，但是，当我旁边的人听到远处的笛声而我却什么都听不到，或是别人听到牧羊人的歌声而我又什么都听不到的时候，那是怎样一种屈辱的感觉啊！这些事情让我濒临崩溃，要不是对艺术的渴求制止了我，我差不多就要结束我的生命了。我知道没把我命里所有的作品都创造出来，我是不可能离开这个世界的，所以我忍受这痛苦的生活，真的痛苦啊！我的身体容易激动，突然有一点变化，就会一下子从最好变成最坏。我必须选择忍耐，别人这么说，我也这么做了。希望我有足够坚定的意志来承受苦难，直到无情的死神割断我的生命之线的那天。也许我的病会好转，也许不会，对此我都是有心理准备的。

As soon as the eldest was fifteen,she was allowed to rise up to the surface of the ocean.when she came back,she had hundreds of things to talk about ;but the most beautiful,she said,was to lie in the moonlight,on a sandbank,in the quiet sea,near the coast,and to gaze on a large town nearby,where the lights were twinkling like hundreds of stars;to listen to the sounds of the music,the noise of carriages,and the voices of human beings,and then to hear the merry bells peal out from the church steeples

当她返回家的时候她说的各种各样千奇百怪的事情，但是最令她感到满意的是，当她坐在布满月光的沙滩上，守着静静的大海，在靠近海岸的地方，注视着就在眼前的城市村镇，那里的灯光就象成百上千的星星在闪烁，耳朵里可以听到音乐声马车的嘈杂声，人类的声音，还有从教堂尖塔上传过来的有趣的铃铛声，但是她不能太接近这些美妙的东西，她是多么想再次去到海上去啊

The paper investigates both block-type pilot linear minimum mean square error algorithm and IEEE802.16 OFDM channel estimation analysis. Simulation results confirm the block-type pilot structure is more suitable for IEEE802.16 system. An optimal pilot setting algorithm, based on space frequency domain, is explored and the pilot chart is presented. The proposed algorithm finds its application in MIMO-OFDM. Simulation results show the algorithm presents a good approximation to the perfect channel state information curve, with about 2dB difference in SNR. The simulation results also demonstrate the algorithm achieves fairly high stability in the environment of fast fading, performance of the proposed algorithm is better that of pilot training channel estimation.3. Taking into account the characteristics of IEEE802.16 OFDM system, OFDM system simulation platform is constructed in Matlab, exploiting simulink as a tool. OFDM modulation and demodulation simulation system are configured on LabVIEW platform. All the system signal processing is simulated, including defining system parameters, designing modulation model, and verifying all the proposed algorithms under different environments, such as white Gaussian noise, multi-path fading, with or without guard interval etc. Bit error performance is evaluated. The research provides valid theoretical basis for practical OFDM system performance evaluation.4. Taking advantage of software radio, the paper designs a hardware platform with both 256-IFFT/FFT and 512-IFFT/FFT OFDM schemes co-existing in one platform. You can predetermine one from the two schemes to carry out almost the same model function with different system performance and parameter setting.5. Referring to IEEE802.16 standard, the paper proposes a design method for generating signals and frames suitable for laboratory investigations implemented in laboratory environment.6. Based on 6701evm digital evaluation card, combined with analogy front-end, the paper designs a DSP software model to deal with baseband signal processing. An overall OFDM scheme, with modulation and demodulation function, is accomplished.

讨论分析了MIMO-OFDM中一种基于空频域的最优导频设置算法，给出了导频图案，通过仿真实验表明，该算法与理想的信道状态信息曲线非常接近，信噪比差距约在2dB左右，并且在快衰落条件下具有较好的稳定性，其性能要优于基于前导训练的信道估计方法。3、根据IEEE802.16OFDM系统特点，论文分别在Matlab中应用Simulink工具构建OFDM系统仿真平台、在LabVIEW平台上实现了OFDM调制解调仿真系统，模拟了整个系统的信号流程，进行了OFDM仿真系统参数的选择和调制模块的仿真设计、论证各算法性能，并根据各种不同的条件：例如高斯噪声、多径衰落、有无保护间隔等，对系统的误码特性进行了评估，为正确评价实际OFDM系统的性能提供了有效的理论依据。4、论文以软件无线电思想作为指导，提出了以256点IFFT／FFT为核心和以512点IFFT／FFT为核心的两种OFDM算法模式并存于同一个硬件平台、且可预选的方案，它们在参数选取和性能指标上有所差异，均实现了相似的模块和功能。5、论文参考IEEE 802.16无线网络标准的参数设置，针对本设计系统的应用环境和系统硬件的性能速率，提出了一种应用于实验室环境的信号结构、帧格式等参数设计。6、论文基于TI公司的6701evm数字评估板卡，结合模拟前端搭建数字中频平台，设计了基带处理的DSP软件模块并进行系统调试，基本实现了一套完整的OFDM调制解调方案。

On closer examination, though, this is not a vote for multilateralism but just the opposite.

仔细审视后我们发现，这并非是对多边主义投出的赞成票，而是恰好相反。

Uncovering their weak spots, so I can defeat them.

揭露出他们的弱点，这样我就可以打败他们了。