等比
- 与 等比 相关的网络例句 [注:此内容来源于网络,仅供参考]
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In the meantime,ASM also has a high level of matching speed compared with the template-matching method.
同时,ASM方法定位目标物体的速度比常用的模板匹配法等有显著的提高。
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Finally, the influence of shear rate and the number density and aspect ratio of the fibers are discussed.
最后讨论了纤维的浓度和长径比等因素对悬浮流微观和宏观性质的影响。
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But the timing of the impact on investment income is not decisive, a large number of foreign scholars already done this kind of research, more important than the timing of the asset allocation of the fund's choice and other factors.
但时机的选择对投资收益的影响并不是决定性的,国外早有大批学者做过这方面的研究,比时机选择更重要的是资产配置的情况、基金的选择等因素。
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This paper chooses residual income model to measure the cost of equity capital, and construct some index to represent the total disclosure quality and earnings disclosure quality of Chinese listed companies. Our analysis shows that for the whole sample of listed companies which conduct seasoned equity offerings in the stock market, controlling 6, company scale, B/M, leverage and asset turnover, there is positive relationship between the total disclosure quality and marginal cost equity capital; there is negative relationship between the earnings radical and marginal cost equity capita; there is no remarkable relationship between the earnings smoothness and marginal cost equity capital.
本文采用剩余收益模型计算公司的股权融资成本,分别以披露总体质量和盈余披露质量作为反映我国上市公司信息披露质量的指标,研究发现在控制β系数、公司规模、账面价值比、盈利水平等因素的条件下,总体来看,信息披露总体质量越高的样本公司的边际股权融资成本越高;盈余激进度与边际股权融资成本负相关;而盈余平滑度与边际股权融资成本的关系并不显著。
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Firstly, the multi-user detector that relatively integrity in theory and proximal to optimal multi-user detector is discussed and Decor elating Detector, Minimum Mean Square Error Detector, Optimal linear Detector together with the multi-capability indexes output energy, SNR, bit error rate, asymptotic efficiency, convergence etc.
本文首先对理论上及性能上接近最佳多用户检测的次最佳多用户检测进行理论研究,计算并分析了解相关检测器、最小均方误差检测器、最佳线性检测器的性能指标(输出能量、信噪比、渐近有效性、误码率以及收敛特性等)。
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Under the assumption that the channel state information was available only at the receiver,the capacity of MIMO systems in Rayleigh fading channel was investigated on the basis of information theory. Three special expressions for the MIMO capacity over ergodic flat fading channel were derived.An asymptotic formula for MIMO systems with equal number of transmit and receive antennas in small SNR was also given. Simulation results show that this approximation is relatively accurate.
以信息论的观点为基础,在假设信道状态信息仅收端已知的情况下,采用等功率发射方案,研究了瑞利衰落信道下MIMO系统各态历经信道容量,推导了三种特殊MIMO信道的各态历经信道容量表达式,以及在小信噪比下等收发天线MIMO系统的容量近似公式,并通过仿真进行了验证,仿真结果表明该近似公式比较精确。
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Shanghai 201208, ChinaAbstract : Frameworks of Na n ZSM-5 type zeolites with various Si/Al ratios have been constructed and optimized with molecular dynamic quench simulation. The results show that the structure parameters of Na n ZSM-5 type zeolite, including the bond length and atomic charges, are consistent with those predicted by ab initio cluster calculations.
利用分子动力学quench方法对所搭建的具有不同硅铝比的NanZSM-5型分子筛进行了优化,结果表明其键长、原子电荷等结构参数与 ab initio 计算法得到的结果相吻合。
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The characteristics of pentacene/perylene derivatives based organic solar cells are investigated in this thesis Donor and acceptor layers are pentacene and N N'-dioctyl-3 4 9 10-perylenetetracarboxylic diimide (PTCDI-2~13C) respectively Twelve organic solar cells with pentacene/PTCDI-2~13C heterojunctions were fabricated to study the influence of various alkylic perylene derivatives on the power conversion efficiency Under the sunlight simulator with AM1 5G filter and 100 mW/cm2 the solar cell of pentacene/PTCDI-7C heterojunction with cathode of Ag/Al bilayer has the best performance among the devices with pentacene/PTCDI-2~13C heterojunctions In PL spectrum analyses the pentacene/PTCDI-7C film had lower recombination rate than the other pentacene/PTCDI-2~13C films; therefore more excitons could reach the P/N junction and enhance short-circuit current Furthermore the PTCDI-7C film grown on the surface of penatcene was more matched than other PTCDI films analyzed by the PL peak shifts of 10 nm and 45 nm thick PTCDI-2~13C and images of atomic force microscope More lattice match between the films of pentacene and PTCDI resulted in fewer defects in P/N junction and more carries can reach electrodes Accordingly the power conversion efficiency approach 2% was obtained from the solar cell with the active layer of pentacene/PTCDI-7C
本研究探讨以五环素/骈苯衍生物异质接面太阳能电池之特性,利用pentacene作为电子施体有机材料,PTCDI -2C~13C作为电子受体有机材料,制作出异质接面为pentacene/ PTCDI-2C ~13C等12种有机太阳能电池,比较不同碳数的骈苯衍生物对於有机太阳能电池之光电转换效率之影响。在AM1 5G、100 mW/cm2的模拟太阳光下,以pentacene/PTCDI-7C异质接面太阳能电池具有短路电流9 882 mA/cm2、开路电压0 376 V、填充因数0 523及光电转换效率达1 945%,皆比其他pentacene/PTCDI-2C ~13C异质接面太阳能电池来的大。由薄膜分析可知PTCDI-7C在这12种太阳能电池中具有较低的电子电洞复合发光效率,可以让较多激子到达异质接面进行电荷分离,减少电子电洞对复合发光的机率;此外,由光激发萤光光谱之峰值位移配合原子力显微镜表面结构图,可以得知当PTCDI-7C成长在pentacene上时会顺著pentacene的结构成长薄膜,故较无缺陷产生在P/N接面处;而在其他结构下则无此现象产生,致使在pentacene/PTCDI-7C薄膜中的载子有较大的机会可以移动至电极,使光电流提高,进而使光电转换效率提高。
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Simplier and more efficient ion extraction methods for atomic vapor laser isotope separation AVLIS were evaluated using a 2-D electron-equilibrium model to compute and compare three electrostatic methods the parallel electrode method, the Π type electrode method, and the improved M type electrode method.
为探索用于原子蒸气激光同位素分离AVLIS的简单有效的离子引出方法,用二维流体理论电子平衡模型计算比较了3种静电场方法平行板电场法,Π型电极法,改进M型电极法计算发现,二维流体理论电子平衡模型并不能很好地描述Π型电极法对另外两种静电场方法,计算了不同外加电压、不同的初始原子密度和不同的目标同位素丰度等条件下的离子引出情况从计算结果可以看出,改进M型电极法不论是从离子引出时间还是从碰撞损失率,都要比平行板电极法好得多当外加电压较高或初始原子密度较高时,这种好处就更加明显因此,改进M型电极法是一种可供实际采用的比较好的静电场方法
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It is said that Chinese people eat ants history of more than eating hot pot, as early as more than 3,000 years ago, when humans are Rumaoyinxie when our ancestors found coward, pangolins and other animals because of a large number of ants feed attractant so strong and healthy inspiration start eating ants follow behaviour.
据说,中国人吃蚂蚁的历史比吃火锅长多了,早在3000多年前,当人类还在茹毛饮血的时候,我们祖先就发现狗熊、穿山甲等动物因诱食大量的蚂蚁因而健壮有力而受到启发,开始效仿吃蚂蚁的行为。
- 推荐网络例句
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Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".
歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车,和一双合并为一移交&整个lotta爱&。
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This is Kate, and that's Erin.
这是凯特,那个是爱朗。
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Articulate the aims, objectives and key aspects of a strategic business plan.
明确的宗旨,目标和重点战略业务计划。