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The Markov forecast model, time series method (triple exponential smoothing method and a combined of triple exponential smoothing method and Markov model) and stepwise regression forecast method were choosed, and the basic principles and processes of the three models were analyzed and compared. Based on above, the three methods were used to predict population dynamic of Cricetulus barabansis and Meriones unguiculatus. The characteristic, accuracy and applicability of three methods were analysed and compared. The results showed that,(1) Markov model belongs to a middle-long time forecast model, and the result was interval forecast, but it reached the requirement of forecasting the harmful population dynamic of rodents. Through the forecasted population dynamic of Cricetulus barabansis and Meriones unguiculatus in 2004, the results were accurate; this meant that Markov model was a good forecast model to Cricetulus barabansis and Meriones unguiculatus population.

选择马尔可夫链预测模型、时间序列分析法(三次指数平滑法、三次指数平滑法和马尔可夫链预测模型的组合预测法)和逐步回归预测法，对这三种模型的基本原理、模型的构建过程进行对比分析，在此基础上用此三种方法预测了黑线仓鼠和长爪沙鼠的种群数量，并对三种方法的特点、预测的准确度和适用范围进行了比较分析，结果表明：(1)马尔可夫链预测模型属于中长期预测，预测的结果为区间预测，但对于害鼠种群数量的预测来说已经达到要求，通过对2004年黑线仓鼠和长爪沙鼠种群数量的预测，预测的结果都比较准确，这说明对于预测黑线仓鼠和长爪沙鼠种群的数量动态，马尔可夫链模型是比较好的模型。

It's a scrum as every tusker shoves his way to the center.

在所有长着长牙的雄海象挥舞着长牙向冰面中心推进时，冰面上乱作一团。

My friends, i want to writtenchinese but the computer is not typewrite chinese.

来了这么长时间最大的感受就是美国人还真是重视圣诞节，在中国就是过年放假的时间也没有暑假放的时间长，可是这里的寒假要比暑假长近一倍。

Methods:Three-dimensional(3D) CT imaging reconstruction was performed in 200case of cervical spine without radicular symptom and injury.C_3-C_7 vertebral body horizontal diameter, sagittal diameter,high.vertebral gap.pedicle vertical diameter and horizontal diameter,coronary high,base long of vertebral uncus,space between vertebral uncus point.highness and width of intervertebral foramenand,transverse foramen,The CT data was transferred to a computer workstation,grouping with age and sex,statistical analysis.

材料与方法：选取200名不同年龄段无外伤、无神经症状和体征的受检者，进行多排螺旋CT薄层扫描，在计算机工作站上对获得图像进行多平面重建，获得相应截面图后，测量各相关指标，包括第3至第7颈椎(C_3-C_7)椎体横径、矢状径及高，椎体间隙，椎弓根的高与宽，冠状位钩突高度、钩突基底宽度、基底长、两侧钩突尖间距及基底长径角度，椎间孔高和宽，横突孔长和宽。按性别、年龄分组进行统计学分析。

These are skirts that are open at the front or back, revealing an underskirt beneath.

即便是刚到膝盖的裙子对于比较高的少女就相对偏短，对于较小的少女来说又相对偏长，如果你的裙子显得很短，你可以穿上一件衬裙或者同色系的撑裙以使你的裙子看起来长些（最近，在着装中穿着多彩的衬裙或者长款的T恤也成为一种时尚主流。

A simplified kinematic model on locomotion of the undulatory long dorsal fin propulsion is based on the the observation and experimental data.

在"尼罗河魔鬼"巡航游动试验的基础上，通过对鱼体几何形态和柔性长背鳍波动的运动学分析，建立了"尼罗河魔鬼"长背鳍波动推进的简化运动学模型，并利用大摆幅伸长体理论分析了长背鳍波动推进的水动力学特性。

Ginkgo biloba tree is not the result soon, but after a very long time; not soon grow taller, and some grow only a few centimeters in the last few decades, we can imagine, now tall and strong of Ginkgo tree to go through many years of ups and downs, and now they are known as the vegetable kingdom before the "giant panda","living fossil" and therefore we have to protect them.

银杏树不是很快就能结果的，而是经过很长时间；也不是很快长高的，有的二三十年也不过长出几厘米，可想而知，现在又高又壮的银杏树要经过多少年的风风雨雨，到现在人们才把它们称为植物界的"大熊猫"、"活化石"所以我们要保护它们。

The wind machine with 1.2A is mainly used to deliver wind with long pipe.

1.2A的风机主要是用于长管送风，如果配带全面具，长管最长可选择30米。

According to the macro-characteristics and distribution law of dioritic microgranular enclaves, the special texture and structure, the contrast between the main rock-forming minerals of dioritic microgranular enclave and the host rock, as well as the genesis analysis on double crystal type percentage of 6 187 plagioclase, the conclusion is drawn as follows: despite the variety of the genesis types of dioritic microgranular enclave in Fangshan granodiorite, most of the genesis type is probably the result of the xenolith metamorphic transformation.

根据闪长质微粒包体的宏观特征及分布规律、特殊的结构构造、主要造岩矿物与寄主岩的对比以及6187个斜长石双晶类型百分率的成因分析得出，房山花岗闪长岩体中的闪长质微粒包体尽管有多种成因，但有不少可能是捕虏岩包体变质改造的结果。

Based on soil radon gas survey in Quanzhou City and Jinjiang City, the authors conducted an investigation of the soil radon gas environment in an area of some 465 km2. The results indicate that radon gas concentrations in soils of Quanzhou and Jinjiang urban areas are at a lower level, whereas those in soils of Quanzhou and Jinjiang suburbs are at a fairly high level. It seems that the radon gas concentration is mainly related to geological background: radon gas concentrations in soils derived from weathering of adamellite, moyite, and biotite schist are higher than those in soils derived from weathering of other rock types.

通过泉州市、晋江市土壤中氡气测量，取得约465 km2土壤氡气环境调查成果，从结果来看，泉州市区和晋江市区土壤中氡气浓度普遍较低；市郊主要为山地，土壤中氡气浓度普遍较高；从土壤中氡气浓度水平的分布来看，土壤中氡气浓度水平主要与地质背景有关，二长花岗岩、钾长花岗岩、钾长浅粒岩及黑云片岩风化土壤中氡气浓度明显高于其他地质背景来源土壤。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。