对比法

Secondly, we established the method of HPLC to determine the content of liensinine in order to control the quality of phenol total base of plumula nelumbinis. With the method we compared three different solvent extraction, and the result showed alcohol-acid water-organic solvent was the best solvent extraction.

使用HPLC法对莲子心酚性总碱中的莲心碱进行质量控制，对三种莲子心酚性总碱的提取方法进行了对比，通过三种溶剂法对莲子心总碱进行提取的实验，结果表明，醇一酸水一有机溶剂提取法提取效率最高，总碱提取率达11.25%，莲心碱提取率为1.20%，此方法操作简便，溶媒易得。

The main purpose in the article is educing a suitable organization model which is in our country's coal enterprise via analyzing and researching typical organization model of coal enterprise at home and abroad by system...

本文的目的是通过分析研究国内外典型的煤炭企业的组织模式，结合我国煤炭工业的政策，通过系统分析法、对比分析法、实证分析法等研究方法，建立适合我国煤炭工业发展战略，符合我国煤炭企业发展的组织模式。

The main purpose in the article is educing a suitable organization model which is in our country's coal enterprise via analyzing and researching typical organization model of coal enterprise at home and abroad by system analyzing, co...

本文的目的是通过分析研究国内外典型的煤炭企业的组织模式，结合我国煤炭工业的政策，通过系统分析法、对比分析法、实证分析法等研究方法，建立适合我国煤炭工业发展战略，符合我国煤炭企业发展的组织模式。

The main purpose in the article is educing a suitable organization model which is in our country's coal enterprise via analyzing and researching typical organization model of coal enterprise at home and abroad by system analyzing, comparin...

本文的目的是通过分析研究国内外典型的煤炭企业的组织模式，结合我国煤炭工业的政策，通过系统分析法、对比分析法、实证分析法等研究方法，建立适合我国煤炭工业发展战略，符合我国煤炭企业发展的组织模式。

Based on finite element method,stiffness characteristics were investigated under different whirling angle, pedestal parameters ,and fit clearance,to present guidance for design of elastic ring.

本文针对两种弹性环刚度的计算方法——解析法和有限元法进行了对比，分析了各自的适用条件，并基于有限元法分析了涡动角、凸台参数和配合间隙对弹性环刚度的影响，为弹性环的结构设计提供了参考。

About design programs of propylene tower post weld whole heat treatment, we have made analyses and compare from the various technical and economic aspects, and in vertical state of large pressurized vessel, we propose to adopt the internal combustion heat treatment method, in horizontal state of it, to adopt high temperature flue gas heat treatment method, and propose center combustion tube method as the future direction of technical developmnet insights.

摘要围绕丙烯塔焊后整体热处理的各种设计方案，从技术、经济等方面进行分析对比，提出对超大型压力容器，立置状态下宜采用内燃法热处理；卧置状态时宜采用高温烟气法热处理，并提出将中心燃烧管法作为今后技术发展方向的见解。

The entrance section of FuXi Double-arched Tunnel is modeled in the fact of factual shallow buried and unsymmetrical pressure condition. Adopting the three heading construction method to simulate twelve kinds of construction projects, confirm reasonable construction orders and left and right tunnel face interval, systematically analyze and research the changing law of the tunnel deformation and surrounding rock stress in soft and cracked condition of surrounding rock,bring forward pertinent advices against construction disease; Build the deep buried tunnel model in middle section of tunnel , separately adopt the central heading bench cut benching method and the central heading full cross method to simulate ten kinds of construction projects, establish the reasonable construction orders, sidestep length and tunnel face interval, which are due to the deep buried tunnel, systematically analyze and research the change law of the tunnel deformation and surrounding rock stress in the section with good surrounding rock condition, bring forward the reasonable construction projects which can make sure of construction safety and save construction time; Because the central wall is disturbed many times during constructing process, its displacement and stress distribution is very complex.

富溪隧道进口段依照实际的浅埋偏压状况建立模型，采用三导洞法开挖模拟了12种方案，确定了合理的施工顺序和左右主洞掌子面错距，系统地分析研究了软弱破碎围岩浅埋偏压段施工的隧道变形和围岩应力变化规律，提出了防止施工病害的针对性建议；洞身段按深埋隧道建立模型，分别采用中导洞台阶法和中导洞全断面法模拟了10种方案，确立了适合深埋隧道的合理施工顺序、台阶长度和掌子面错距，系统分析研究了围岩较好深埋段施工的隧道变形和围岩应力变化规律，提出了兼顾施工安全和节省工期的合理施工方案；由于受到多次扰动，中隔墙的位移和应力变化规律较为复杂，通过对各种方案的对比分析，得出了中隔墙在施工不同阶段的位移变化规律、应力变化规律和应力分布规律，尤其对于浅埋偏压段隧道施工时中隔墙位移和应力变化规律做了深入研究，提出了合理的施工建议。

The energies in different scales after the wavelet decomposition respectively are applied to extract feature, and absorptive method based on Dempsters rule is used in feature fusion of multi-source information. The results of the simulations between absorptive method and nearest neighbor method are compared, which show the effectiveness of evidence reasoning used in multi-target recognition.

利用了小波分解尺度细节信号能量特征作为四类目标声信号提取的特征，采用基于D-S的新组合规则吸收法对多传感器信息进行特征融合，并对吸收法及最近邻法两种情况下的识别效果进行了对比，仿真结果表明证据推理为声信号多目标识别提供了一种有效的方法。

Decoloration capacities of the coke cathodic bed electric reduction,NaC10 oxidation and iron filing reduction have been compared.

对比了焦炭阴极床电还原法、NaCIO氧化法、铁屑床还原法3种脱色工艺。

Main contents are shown as follows:(1) After comparing all kinds of applied methods, three-bar stimulation analysis method which is simple is selected to calculate coefficients of shear lag on some cross section of box girder.

将空间有限元法和三杆比拟法两者的计算结果进行对比分析，指出了三杆比拟法的适用范围。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。