The distribution patterns and migration routes of the endemic genera of the superfamily Tenthredinoidea in Eastern Asia are analyzed.
叶蜂总科在世界各大动物地理界的分布格局为：一个东亚主要分布和分化中心，４个次级分化中心：非洲中部、南美中偏西北部、北美、地中海地区。
The geographical distribution,the center of distribution and differentiation of Dioscore-aceae,and the time of origin are discussed in this paper.
热带亚洲（尤其云贵高原－横断山一带）很可能是该科的原始分布与分化中心，热带美洲及热带非洲则可能是２个次生分布与分化中心。
Two main distribution centers were located,one in southwestern Sichuan and the other in northern Sichuan.
通过对四川3个州和3个地区共60多个县的野生荞麦资源进行系统考察、搜集和整理,发现了分布于四川不同生态坏境条件下的野生荞麦资源有8个种、2个变种和2个亚种,明确了四川野生荞麦资源有两个主要分布中心(四川西南和四川北部),野生荞麦资源的原生境具有多样性。
The species had three distribution centers: the first one was in Hainan Island, China, the second one was Kalimantan Island (Sarawak of Malaysia and East Kalimantan of Indonesia) and the other one was in Cha-Pa, Tien-Yen.
而广州及其附近地区正逐渐成为金钟藤新崛起的一个分布中心。
It s the distribution center of the while country.
从该属在我国的分布现状来看，我国的华南地区不仅含有较多的种类，而且其特有现象亦十分明显，是我国该属的现代分布中心。
The particle filter uses second-order central difference filter to generate the proposal distribution.
为了改善非线性系统状态估计问题中粒子滤波算法的估计精度,提出采用二阶中心差分滤波方法来产生建议分布函数的新算法。
One is the formula of central difference based on isometric node of interpolation polynomial,and the other is fitting an original function,afterwards finding its derivation.
在MATLAB中,数表函数由于函数表达式未知,不能用diff()函数直接求解,文章介绍了运用拉格朗日插值多项式推导出等距节点数值微分的中心差分公式求数表函数导数,以及拟合原型函数再求其导数,并通过例子演示了这两种方法的MATLAB实现。
The authors present a compound interpolation method of calculating discrete heat conduction flow field,which combines central difference with Lagranges parabolic interpolation.
提出了一种将中心差分与拉格朗日抛物线插值相结合的复合插值法来确定离散导热热流场，并与其它方法进行比较，结果表明该方法具有更高的精度。
GEOGRAPHICAL DISTRIBUTION, ORIGIN AND EVOLUTION, AND CENTRE OF DIFFERENTIATION OF HIGH-ALTITUDE PELOBATID TOADS IN ASIA (AMPHIBIA: PELOBATIDAE)
亚洲高海拔锄足蟾的地理分布特点、起源与演化、分化中心的探讨
Cultural Psychological Analysis for the Father's Image in Chinese Films
中国电影中父亲形象的文化心理分析
Purification of Total Alkaloids from Nelumbo nucifera by Macroporous Resin
大孔吸附树脂分离纯化莲心中莲心总碱的研究
Guizhou Research Centre of Physico-Chemical Test & Analysis
贵州省理化测试分析研究中心
Beijing Pony Center for Physical and Chemical Analysis
北京谱尼理化分析测试中心
The Research on Analysis and Evaluation to the Core Competence of Sinopec;
中国石化核心竞争力分析与评价研究
The Impact of Warehouse Centralization on Inventory Quantity;
仓库中心化对库存持有量的影响分析
The Explore in Colony of Core-competence in Virtual Corporation Mode;
企业动态联盟中群体化核心能力分析
Diversified Operation of Mt. Wutai Sports Centre
五台山体育中心多元化经营个案分析
Division and Development of the World Manufacturing Centers Under the Trend of the Economic Globalization;
经济全球化背景下世界制造中心的分化与发展
Technology Incubation Centre
技术孵化中心(技孵中心)
The Study on Development Strategy of Technique Center of SINOPEC Tianjin Branch;
中石化股份天津分公司技术中心发展战略研究
Configuration and Optimization of the Distributed Power System in Advanced Training Center of China Power Investment Corporation;
中电投高培中心分布式供能系统的配置与优化
Effects of inhalation of nitrous oxide in oxygen during the active of labour on.fetal heart rate.
氧化亚氮吸入分娩镇痛对产程中胎心率的影响
Landscape Pattern Analysis and Optimization of Green Space System in Center Regions of Chengdu;
成都市中心城区绿地系统景观格局分析与优化
Research on the Optimal Problem of Goods Assignment in Railroad Freight Centre;
关于铁路货运中心货源分配优化问题的研究
The Investigation and Analysis of Street Green Space in Songjiang City;
上海松江中心城区街道绿化调查与分析
The Role of Wnt3a in Cardiomyocyte Differentiation of Mouse Embryonic Stem Cells;
Wnt3a在胚胎干细胞向心肌细胞分化过程中的作用
