Based on the geographical distribution and statistical analyses, southern of Southeast China, northern North China and southern Central China are the likely center of distribution, differentiation center and endemic center of this genus respectively.

Based on the above results, The authors concluded that Nanlin mountains and nearby was an original differentiation center of Sect.

作者认为南岭及附近地区是山茶组植物的分布中心和分化中心；

Its current distribution and differentiation center is the southwest of China, including Hengduan Montain and eastern Himalayas.

是中国种子植物中最大的属，其现代分布和分化中心是我国西南部的横断山区和东喜马拉雅地区。

The Regional Differentiation Center and the Historical Reasons of Zhenwu Temple During from Song to Ming Dynasty

宋元明时期真武庙的地域分布中心及其历史因素

Our country is the distribution and differentiation center of the Gynostemma, and has abundant resource.

我国是绞股蓝植物分布和分化中心，其资源丰富。

The closely spatial relationship between metasediments, migmatites and migmatitic granite-gneiss in the district exhibits the entire process of transformation from sediments to granitic rocks by metamorphic differentiation, migmatization and partial melting.

变沉积岩、混合岩及混合花岗片麻岩在空间上的密切共生关系，揭示了沉积物经历了变质分异、混合岩化和部分熔融作用改造成花岗质岩石的过程。

The Weizi gold deposit has close relation to An-bearing siliconite formed by metamorphic differentiation.

隈子金矿床与辽河群盖县组合金硅质体关系密切，硅质体属于变质分异而成。

Mass Transfer in Processes of Metamorphic Differentiation

变质分异作用中的质量迁移

The Brief Method on Efficiency Calculation of Differential Gear Train and Its Application

差动轮系效率计算的简便方法及其应用

The Common Method on Calculating Efficiency of Differential Gear Train

计算差动轮系效率的通用方法

The position adjusting of differential gear system of production line

生产线上差动轮系调整相位装置

Finite Element Method Simulation on Precision Forming Process of Car Differential Gear

轿车差速器齿轮精密成形的有限元数值模拟

This model, based on a perfect group of partial differential equations, taking phase vectors as variables, is educed as a discrete one and, at last, is changed into real physics-space.

该模型从一组相空间中理想的偏微分控制方程出发，用相矢量为变量，导出其离散形式，再通过变换到实际的物理空间，得到最后要的电离层TEC参数的相空间解析预测模型。

Caused to hear poorly or not at all. These quantities are not perfect differential.

使得听力微弱或者完全听不见。这些量不是全微分。

Digital Differential Analyzer, Midpoint Analyzer and Bresenham are three algorithms don't discuss the state that the slope's absolute value is above one.

数值微分法、中点法、Bresenham算法是直线扫描算法中的三个常用算法，这三个算法均未讨论斜率大于1的情形。

The two classes of planar curve generation are DDA ( digital differential analyzer) and DCM ( displacement comparison method).

平面曲线的生成算法主要有DDA（数学微分分析器）和DCM（位移比较法）。

Ellipse Interpolation with Digital Differential Analyzer

数字积分椭圆插补算法

Pulse system differential analyzer

脉冲系统微分分析器

A DDA arc interpolator for digital differential analyzer based on FPGA

基于FPGA的数控数字积分法圆弧插补器的设计与实现

Lastly, interpolation algorithm-Digital Differential Analyzer in the system is presented.

最后，简述了实现两轴联动的数字积分法&DDA直线插补算法。

A High Precision Digital Differential Analyzer for Circle Generation

高精度的圆数字微分分析器