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A new universal hybrid topology is brought forward. Two types multilevel inverter: equal DC voltage and DC voltage in geometric proportion is studied, besides this, simulation and experiments on SVPWM applied on cascaded H-bridge inverter is also studied.

提出了多电平逆变器的一种通用组合拓扑结构，针对这种拓扑结构重点，研究了直流侧电压相同及等比变化的两类级联拓扑以及级联H桥逆变器的矢量控制方法；并对级联H桥逆变器的矢量控制方法做了实验研究。

Because of rigorous theory is lack, method that metal plastic stream is supposed through geometric proportion condensation, makes that cell quantity of the partition complex special-shaped product and disperse dots of die surface are many, reduce regression precision of streamline die design, sometimes can't be built mathematics module and its optimization.

由于缺乏严密的理论支持，仍假设金属流动按等比压缩方式研究，致使复杂拔挤异型材划分等比率单元过细及描述模腔曲面的离散点过多，降低了流线模设计的回归精度，甚至无法建立模腔数学模型及其优化。

Because of the chief equipment and technic are mostly imported from the abroad presently. It is necessary to lucubrate oxidation mechanism of calcium sulfite and the main influencing factors in the oxidation of calcium sulfite, which are valuable for accelerating the oxidation Rate, consummating academic basic of lime stone-gypsum FGD and optimizing technical process A simulate equipment has been designed based on the theory of geometrical comparability which is reduced scale in geometric proportion to the 300MW capacity.

目前我国的湿式石灰石–石膏法设备和技术均从国外引进，因此深入研究脱硫过程中亚硫酸钙的氧化机制和影响亚硫酸钙氧化的主要因素，对提高氧化速度、完善湿式石灰石–石膏法脱硫技术的理论基础、优化烟气脱硫工艺过程具有重要的价值。

Based on the sectional shield tunnels of metro in China, mechanical behavior of segment structure of shield tunnel under the different erection methods has been studied with geometric proportion of 1:12 through the simulated model tests of 3D 'ground-shield tunnel' in which joint effects of segments and mutual action effects between segments and ground are considered.

以我国城市地铁区间盾构隧道为对象，采用几何比 1/12、同时考虑盾构隧道管片接头效应和管片与土体相互作用效应，用三维土-盾构隧道相似模型试验对盾构隧道管片结构在不同拼装方式下的力学行为进行了研究，并将研究结果与梁-弹簧模型的理论分析结果进行了比较，得出的结论可为盾构隧道的设计提供参考。

The main contributions of this paper include,(1) introduces the backtracking mechanism into traditional GEP methods and proposing a new algorithm named GEP with backtracking strategy.(2) Proposes the concept of Backtracking Checkpoint and designing Geometric Proportion Increased Checkpoint Sequence and Accelerated Increased Checkpoint Sequence to restrict the backtracking process.(3) Extends the GEPBS algorithm by introducing a Retrogression Factor to control the percentage of backtracking.(4) Proves the effectiveness of the new algorithm by two extensive experiments, which show that new method increases the max fitness by 49.2

本文的主要工作包括：（1）在传统GEP算法中引入回溯机制，提出基于回溯策略的GEP算法（GEP with backtracking strategy ，GEPBS）；（2）提出回溯检查点概念，设计了等比递增检查点序列和加速递增检查点序列用于约束回溯过程；（3）扩充基于回溯的GEP算法，设计了退化因子，提出了按比例回溯策略（GEP with proportional backtracking strategy， GEPPBS）（4）通过两个实验验证了新算法的有效性，在相同条件下较传统算法的适应度最大提高了49.2％，成功率最高提高了4倍

Methods CNP absorbing MMC experiment was designed by geometric proportion method, while CNP-MMC desorbing MMC experiment was by diluting on 2 times. By the way of determining the free MMC concentration of the separating medium by pressurized liquor chromatography, we can get absorbing and desorbing rate.

采用等比法设计CNP吸附MMC实验，以2方式稀释CNP-MMC溶液设计CNP解吸附MMC实验，应用高压液相色谱法测定分离液中游离的MMC浓度，计算吸附率和解吸附率。

If average values before or after catastrophe point when the pressure at both ends reduces exceed the threshold value, judging that there is leak and positioning: calculating approximate wavelet transformation coefficient of pressure data at both ends, initializing searching interval, calculating a signal time delay value corresponding to approximate wavelet transformation coefficient in the searching interval from maximal scale N; converting the time delay value under scale N to that under N-1 by geometric proportion relation; updating the searching interval, repeating above processes until the scale is 0 and positioning based on the time delay value.

若两端压力下降突变点前后的均值变化均超过阈值，判定有泄漏并进行定位：计算两端压力数据的近似小波变换系数，初始化搜索区间，从最大尺度N开始在搜索区间内计算对应近似小波变换系数的信号时延值，利用等比关系将尺度N下的时延估计值转换为N-1下时延估计值，以该值更新搜索区间，重复以上过程至尺度为0，以此时延估计值进行定位。

Medical signal and image multiscale analysis method, which is multi-scale analysis of a geometric representation of the article.

医学信号与图像的多尺度分析方法研究，这是多尺度几何分析中有代表性的文章。

It is a binary format for representation of planar geometric shapes, text labels and some other information in hierarchical form.

它是一个二进制格式为代表的平面几何图形，文本标签和其他一些信息的分级形式。

Also, we can present the geometric representation of biological sequences and structures. So the genometric topology and group theory are important also.

同样我们可以用几何方法来表示生物序列和二级结构，几何拓扑和群论也发挥了很大的作用。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。