半

The application of the extension engineering method in regionalization avoided the shortcomings of single indicator, such as the aridity or precipitation, and conduced to the consummation of the physicogeographical regionalization, the establishment of the eco-geographical regional system of China, and the further research on the transitional areas.

运用可拓工程方法，以综合考虑引起区域自然景观分异、变化的主导因子为出发点，解决了中温带半湿润、半干旱区界线划分问题，弥补了单指标（如仅考虑干燥度或降水量）在区域界线划分中的不足；有助于综合自然地理区划的进一步完善和中国生态地理区域系统的构建；也有益于对生态过渡带的深入研究。

So, in order to provide scientific afforestation methods and guideline, it is rather necessary to introduce and popularize Picea mongolica in arid and semiarid regions.

但是该树种是云杉属中的特殊种，在半干旱草原中于沙地上能良好生长，有罕见的防风阻沙能力，大有在半干旱区甚至干旱区引种推广的必要。

This paper presents the design of control and mathematical modeling and computing of a semi-physical simulation system of electric podded propulsion, which is been developing in Shanghai Maritime University.

介绍了上海海事大学正在研发的半实物吊舱式电力推进仿真系统控制方案和仿真算法的设计。半实物仿真系统整合了物理硬件设备和仿真软件，对改善非线性系统在大工况变动下实时仿真的快速性和精确性，以及在控制方案设计、船桨数学模型的建立和仿真算法的选择等方面都有其特殊的作用

The pore structure of semi-coke particle samples with diameters between 2.36 mm and 3.35 mm were analyzed with the Mercury Porosimeter PoreMaster-60, based on which the corresponding fractal dimensions were calculated.

计算结果表明，工业半焦的孔隙结构符合分形特征，在样品颗粒尺寸为2.36～3.35mm的测量条件下，样品的分形维数在2.7982～2.9154之间，其可决系数在0.9157～0.9614之间；样品的分形维数与煤种和半焦热解工艺过程均有一定的关系。

METHODS: Ninety-six Wistar rats were randomly divided into the Pringle group, hemihepatic vascular occlusion group and hepatic blood inflow occlusion without hemihepatic artery control group.

将96只Wistar大鼠随机分为Pringle法Ⅰ组、半肝阻断Ⅱ组和保留半肝动脉血供的入肝血流阻断Ⅲ组。

The results showed with the fruit ripening granulation index rose; semicellulose content of granulated juicy sac decreased first and then increased, while semicellulose content of non-granulated juicy sac reduced; the cellulose content of granulated juicy sac rose, while cellulose content of non-granulated juicy sac decreased first, and then rose to the top, and then reduced; and protopectin content reduced.

结果表明：粒化指数随着果实成熟而上升；粒化汁胞的半纤维素含量下降后上升，未粒化汁胞的半纤维素含量下降；粒化汁胞的纤维素含量增加，未粒化汁胞的纤维素含量下降后上升又下降；原果胶含量降低。

Based on the data from field investigation along a 5 km transect,spatial variant features of the vegetation coverage of the psammophytic half shrub community in Mu Us Sandland was described through semivariance analysis and fractal analysis.

在使用 5m× 50 0 0 m样带进行调查获得的植被盖度数据的基础上，通过半方差分析和分形分析揭示了毛乌素沙化草地沙生半灌木群落植被盖度的空间变异特点。

Spatial heterogeneity ; the psammophytic half shrub community ; vegetation coverage ; semivariance analysis ; fractal analysis ; Mu Us Sandland

空间异质性；沙生半灌木群落；植被盖度；半方差分析；分形分析；毛乌素沙地

In the first part, first of all, we have a priori estimate for solution of the reaction-diffusion equation with initial condition and Dirichret boundary conditions. Then, we construct a semidiscrete Legendre pseudospectral scheme, and have a priori estimate for approximate solution. We discuss the asymptotic stability of approximate solution. At last, we get a error estimation on large time for solution of the semidiscrete system.

首先，对此类方程初边值问题的解进行了先验估计；然后建立方程半离散的Legendre拟谱格式，并对近似解进行了先验估计，讨论了近似解的渐近稳定性；最后，得到了半离散系统解的长时间误差估计。

But Bosie was not the only homosexual son of the half-mad, anti-Semitic, alcoholic Marquis of Queensberry.

波茜不是半人半兽的老酒鬼奎恩斯伯里侯爵（拳击运动的比赛规则就是由此人拟定）的儿子当中惟一搞同性恋的，与波茜关系密切的长兄弗朗西斯也跟男人混得火热。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。