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Aim at the problems of great overhead and the lower stability in Ad Hoc routing technology, an improved ant colony algorithm is proposed to study an ant-based Ad Hoc routing protocol. In our algorithm, the ant foraging, labor division and task allocation algorithm is the basic designation thinking.

针对已有Ad Hoc路由技术中存在的开销大以及网络稳定性较低的问题，本文引入蚁群算法，提出改进思想，将蚂蚁觅食和分工的方法作为路由设计的基本思想，研究基于改进蚂蚁算法的Ad Hoc路由协议，并与比较成熟的AODV(Ad Hoc On-Demand Distance Vector)做对比进行仿真。

Species identification in the traditional sense was mainly used in forensic medicine, with technological progress and the demand of social development, also in other fields.

传统意义上的种属鉴定主要用于法医学研究方面，然而随着科技的进步及社会发展的需要，种属鉴定在其他领域也有广泛的应用。

A new model was developed to predict forestland demand of China during the years of 2010-2050 in terms of the concept of forest ecosystem services.

基于森林生态系统服务概念，建立了一个新的林地资源预测模型，预测中国2010-2050年的林地资源需求。

The prediction reveals that the demand of total forestland of China will be 244.8, 261.2 and 362.2 million ha by the year 2010, 2020 and 2050, respectively.

这一模型预测表明，2010、2020、2050年林地资源的需求量将分别达到2.448×10^8、2.612×10^8、3.622×10^8 hm^2。

In the foretime, the problem is how to change the habitual psychology and habit of a close system in order to fit the demand of the society's development.

当年面临的问题是如何改变一个封闭体系的惯常心理和行为，以适应现代社会发展之需。

Economic growth has the demand of the quantity already, have qualitative formulary sex again, it is the unity of amount and quality.

经济增长既有量的要求，又有质的规定性，是数量和质量的统一。

The main characteristic of the higher vocational education is the close contact with the society and the economy to adapt forwardly to the demand of the region, the economy and the social development.

高等职业技术教育的特色，主要表现在与社会、经济紧密的联系，不断主动适应区域经济和社会发展的需要。

In this paper,a modeling framework is proposed according to the demand of urban sustainable development.

首先，根据城市可持续发展的要求，提出了建模的基本框架。

So the key purpose of fresco design is to satisfy the demand of peoples visual organ.

所以，满足人的视觉器官是壁画设计的关键所在。

With the development of society and demand of energy economy, it is the new direction and development trend that improving the focus and reducing optical losses of Fresnel lens.

随着社会的发展和节能经济的需求，提高菲涅尔透镜的聚焦性，降低透镜的光学损失成为了菲涅尔透镜研究的新动向和发展趋势。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。