查询词典 studied

In speech communication, almost half of the time is the silence state, which contains much redundant information need to be taken away to improve code efficiency, so the silence frame should be compressed; On the other hand, to satisfy people's listening feelings, speech code implemented on UWB would be a new future's research direction on speech code. Nowadays the compression on narrow band or wideband have been studied a lot, but the silence compression on UWB need to be studied more, which is the main job of this paper.

在语音通信中，平均一半的时间处于无语音的空闲状态，这里蕴含着大量的冗余信息，所以去掉这些冗余信息将会大幅度的提高语音编码的传输效率，这就需要对静音信号进行压缩；此外，为了满足人们听觉享受，在高带上实现语音编码也将成为未来的研究方向，现如今窄带和宽带的静音压缩技术已经较为成熟，但高带的静音压缩技术尚待发展，这也正是本文研究的必要性。

Zirconia/graphite compound mold core was prepared by the coating, in which the silicon sol was used as binder and zirconia was used as refractory materials. The application feasibility of metal particles as a coolant in the solidification process was studied, and the application of metal particles as subsidiary coolant in the liquid metal cooling of directional solidification were analyzed and studied in this investigation. The conclusions can be drawn as follows: 1 The zireonia/graphite compound cores fabricated by brushing coating which was prepared by making silicon sol agglutinated zirconia as a refractory material were casteded at 800℃and 1000℃respectively, and the results show that the strength of the mold core is strong enough to meet the requirement of practical casting.

本文研究了以硅溶胶为粘结剂，氧化锆为耐火材料来制备氧化锆／石墨复合型芯的制备工艺；并分析了金属颗粒作为冷却剂在金属凝固过程中应用的可行性、金属颗粒的冷却能力以及金属颗粒作为辅助冷却剂在定向凝固的液态金属冷却法中的应用，得出以下结论：(1)以硅溶胶为粘结剂，氧化锆为耐火材料来配制涂料，采用刷涂石墨型芯的方法来制备的氧化锆／石墨复合型芯经800℃和1000℃实际浇铸实验，结果证明型芯的强度足够满足实际浇铸要求。

The detection capability of single buoy is limited. To improve detection performance, we studied the detection-level fusion of several buoys based on the position and information characteristics of several airdropped buoys. On the basis of the analysis to distributed detection fusion theory, we studied the structure, rule and algorithm of the buoy signal detection-level fusion based on distributed detection.

针对单枚浮标对目标检测能力有限的问题，为了提高对目标的检测性能，根据多枚空投浮标的位置和信息特点，对多枚浮标的检测级融合进行了研究；在对分布式检测融合理论进行研究的基础上，研究了基于分布式检测的浮标信号检测级融合体系结构、融合规则、融合算法等。

At the beginning of this article, the elaboration and the research on the economy growth studied by previous economists is reviewed , then a new economic model is analogized from the analysis of the law of universal gravitation. Finally, the function of each factor is studied with the qualitative method and quantitative method separately in order to make the analysis even more concrete , the correlated proposals are put forward in this foundation.

本文先回顾了历代经济学家对经济增长的论述和研究，然后从万有引力定律中架构出一个新的模型，最后分别用定性和定量的分析的方法将每一个因素的功能和作用加以论述，力求使之更加具体化，并在此基础上提出相关的建议。

At the beginning of this article, the elaboration and the research on the economy growth studied by previous economists is reviewed , then a new economic model is analogized from the analysis of the law of universal gravitation. Finally, the function of each factor is studied with the qualitative method and quantitative method separately in order to make the analysis even more concrete , the correlated proposals are put forward in this foundation.

本文先回顾了历代经济学家对经济增长的论述和研究，然后从万有引力定律中架构出1个新的模型，最后分别用定性和定量的分析的方法将每1个因素的功能和作用加以论述，力求使之更加具体化，并在此基础上提出相关的建议。

On the stock experiments, the followings are studied: the daily changes of sap, the changes of sap during the grafting period, the differences among the stocks and the controlling of sap etc; The influence of temperature and humidity on grafting, the effective time of grafting and grafting method are studied on the grafting and callusing experiment; It could got a deep and whole knowledge of which how factors affect the healing process of grafting by studying the influential mechanism of them, and it could provide some physiological and biochemical bases for this kind of study, so that this kind of study should carry out deeply and systematically.

在砧木方面，研究了伤流日变化和嫁接时期变化动态、砧木间伤流量的差异、伤流控制等。在嫁接愈合方面研究了湿度、温度的作用，嫁接有效时期，嫁接方法等。通过研究各种影响因子的作用机制，可以对嫁接愈合过程与各种因子的关系有一个更深入而全面的认识，为此方面的研究提供一些生理生化方面的理论依据，以便对其进行系统而深入的研究。

In this paper, we use crylicacid to copolymerized with acrylamide,the copolymerization was studied through molecular weight of polyacrylamide and invert percent, also studied the effect of use different molecular weight and substitution degree APAM to paper strength.

就阴离子聚丙烯酰胺的合成进行了研究，改变反应条件获得了不同分子量的聚丙烯酰胺。

Firstly, the different effect of rectorite modification for the mechanical property of E-51 system were compared; the effect of organic clay for the viscosity and Gel-time of pure E-51 epoxy resin were checked separately; the influence of organic clay for hardening process was studied with FTIR technology; And, the infection of organic rectorite content in matrix for the mechanical property thermal-wet tolerance property aging resistance property and medium endure property for the both of two system were studied relatively. The effect of organization for the inter-layer distance of clay was denoted by XRD technology; To probe into the thermodynamics status about reaction, we investigated the heat discharging of reaction system in the help of DSC. The impact and crooking of solidifying system was observed with the SEM to investigate the decentralization of organic clay, and, at the base of this ,we discuss the mechanism of clay toughing-buildup polymer matrix.

分别考察了有机粘土对树脂体系粘度和凝胶特性的影响，利用红外光谱分析技术研究了有机粘土的加入对体系固化工艺的影响；分别考察了有机粘土含量对二体系的力学性能、耐湿热性能、耐老化性能以及耐介质性能等的影响；采用X-衍射实验表征复合材料中有机粘土层间距的变化；用视差扫描量热法考察了体系的放热情况，以探讨反应的有关热力学状况；通过扫描电子显微分析技术对浇注体的弯曲、冲击断口进行观察分析，以考察、表征有机粘土的分散情况，并在此基础上探讨了有机粘土改性环氧树脂的机理。

WANG Wei-Ting, GUO Lian-Jun, QU Ling, WANG Fang, LU Qing, QIAN Jia-Qing(Department of Pharmacology, Tongji Medical College, Huazhong Universityof Science and Technology, Wuhan 430030, China)By using decapitating, intravenous injection of saturated MgCl2 and legation of bilateral carotid arteries with vagi, theeffects of 1-(2,6-dimethylphenoxy)-2-(3,4-dimethoxyphenylethyl- amino) propane hydrochloride on survival time in mice were studied. With the model of cerebral ischemia for 20 min and reperfusion for 10 min, effects of DDPH on the superoxide dismutases activity and malondialdehyde content in brain tissue and pathological changes were studied.

采用断颅，iv饱和MgCl2溶液及结扎双侧颈总动脉和迷走神经等法造成小鼠脑缺血模型，观察1-(2，6-二甲基苯氧基)-2-（3，4-二甲氧基苯乙氨基）丙烷盐酸盐对小鼠脑缺血后存活时间的影响；采用小鼠脑缺血（20 min）再灌注(10 min)模型，观察DDPH对脑组织超氧化物歧化酶活性，丙二醛含量及组织病理损伤的影响。

The application results from fluorination showed microwave heating could accelerate chemical reactions markedly. The reaction time could be shortened 50% at least than that of conventional heating. The relationship between fluorinating agents\' structure and their activity was studied systematically. In addition, an anhydrous KF with higher activity was prepared by using expansion effect of microwave heating. As we known, solvents were very important to reaction. The comprehensive study showed some less polar aromatic solvents could be used as dipolar solvents. In addition, they had better effect than dipolar solvents in some occasions, such as fluorination of chlorobenzaldehydes and chlorinated diphenyl ketones etc. The primary applications of ionic liquids were also studied which indicated reactions with ionic liquids as solvents were more efficient and simple.

研究表明，微波是一种节能高效的加热方式，在微波作用下的卤素交换氟化反应具有反应速度快、转化率高、选择性好的优点，其反应时间可较常规加热缩短50%以上；同时也系统地研究了氟化剂种类及制备方式对其反应活性的影响，并利用微波加热的膨化作用制备出了一种活性较高的KF，其活性与喷雾干燥KF相差不大；溶剂对反应具有重要的作用，在此系统地研究了强极性非质子溶剂和中等极性非质子溶剂的应用情况，发现一些中等极性的非质子溶剂如硝基芳烃和氯代芳烃类溶剂在氯代苯甲醛类化合物的氟化反应中具有比强极性非质子溶剂更好的使用效果。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。