预方案

Refining monomer and preparating plexiglas sheet having yellow color were researched. The two projects were adopted, one was to add fluorescence adding white acidifier OB and PF, the other was to process alkali to wash and add additive before rectifying.

对工业上精制单体制取有机玻璃板颜色发黄问题进行了研究，采用在预聚体中加荧光增白剂OB和PF与裂解单体进行精馏前碱洗及加添加剂两个方案。

Through the real investigations of specific technical schemes of anti looseness energy storage equipment for thread connection, a new approach was found to eliminate looseness of pretensioned thread connection, especially locomotive wheel axle and gear box bolt connection looseness.

分析了出现螺纹联接松缓的主要原因，介绍了解决螺纹联接松缓问题的一种新的方法，并通过对螺纹联接蓄能防松缓装置具体技术方案的实际考察，为解决预紧螺纹联接，尤其是机车抱轴及齿轮箱螺栓联接松缓问题，找到了一种新途

The designed banquette position,the river closure discharge and pre-embankment length of the Nuozhadu Hydropower Station are tested by the hydraulic model test.

通过水力学模型试验，验证了糯扎渡水电站设计的戗堤位置布置，研究确定了截流流量、预进占长度，并对在截流流量1 220 m3/s下，戗堤进占各区段的龙口水力特性和抛投材料的使用情况进行了分析，为截流施工方案的决策和施工组织的实施提供了依据

The purpose of this design does not change in the basis of the original equipment used CENTUM CS3000 for the catalytic reforming pre-hydrogenation control devices in order to separate the liquid tank and the stripper pressure control as a priority, design a set of complete control program.

本次设计目的是在不改变原有设备的基础上采用CENTUM CS3000对催化重整预加氢装置进行控制，以分离罐的液位和汽提塔的压力控制作为重点，设计一套完整的控制方案。

The purpose of this design: do not change in the basis of the original equipment used CENTUM CS3000 for the catalytic reforming pre-hydrogenation control devices in order to separate the liquid level and tank pressure stripper tank and return level control focus on the design of a complete set of control programs.

本次设计目的：在不改变原有设备的基础上采用CENTUM CS3000对催化重整预加氢装置进行控制，以分离罐的液位以及汽提塔的压力和回流罐的液位控制作为重点，设计一套完整的控制方案。

The design purpose is not changing the original equipment on the basis of CS3000 CENTUM of catalytic reforming, advance hydrogenation to separator level and stripper pressure control, design as a complete set of control plan.

本次设计目的是在不改变原有设备的基础上采用CENTUM CS3000对催化重整预加氢装置进行控制，以分离罐的液位和汽提塔的压力控制作为重点，设计一套完整的控制方案。

Secondly, Pre-emphasis is used to improve the high boost in WWF algorithm. In the same way, using an effective frame regrouping precept improve frame overlapping and regrouping, designing an new SH window to window function's design, selecting coif wavelet as the analysis wavelet basis to wavelet basis's selection, discarding the unvoiced frames by threshold-wavelet transform to unvoiced/voiced frames' distinguish, and solving the wiener gain by the fake cepstral subtraction to Wiener gain's getting as well.

采用进行预加重处理、设计有效的帧重组方案、自定义SH窗、选用coif小波作为分析用小波基、采用加阈值小波变换法去除清音帧，和基于伪倒谱相减法求解维纳滤波增益系数等方法，分别对模型中高频提升、帧重叠与重组、窗函数设计、小波基选取、清浊音判别及维纳滤波增益系数获取等实现细节进行研究和改进。

Beimelt and Chor first proposed the Key Predistribution Scheme in [1]; Stinson summarized and decribed some methods of constructing KPS in[2-4]respectively.

Beimelt和Chor在[1]中提出了密钥预分配方案（KPS，Key Predistrfoution Schem）；Stinson在[2-4]中对KPS进行了总结，并且提出了一些构造方案。

In this context, we propose a time deployment based, pairwise keymanagement scheme called TDBK. In TDBK, the network lifetime is divided intoseveral consecutive network deployment statuses which are separated by nodedeployment events. Each node to be deployed is assigned its key informationthrough a special two-tier key predistribution mechanism, and timely deletes theuseless part of the key information through the key elimination mechanism eachtime the pairwise key establishment is finished in terms of a new nodedeployment event.

在此背景下，我们提出了一种基于时间部署的对****管理方案(Time Deployment Based Keying，TDBK)，该方案将网络的生命周期分为多个连续的网络部署状态，相邻的部署状态之间通过节点部署事件分隔，每个节点通过特殊的两级****预分配机制来获得用于建立对****的****信息，随后通过****清除机制在每次节点部署事件发生时进行的对****建立过程完成后及时地删除其中无用的****信息。

In this paper a power-saving scheme for mobile Ad hoc networks based on IEEE 802.11 DCF is proposed.Under the proposed scheme,the source node will regulate the transmit power of the data packets dynamically by the use of a method of pre-estimation of average noise power and the feedback of RTS/CTS handoffs during the reception.

基于IEEE 802.11 DCF MAC协议提出了一种适用于移动无线自组网的功率控制节能方案，在该方案中节点通过一种接收过程中的噪声功率预估计方法和RTS/CTS握手机制的反馈，动态调节待发送数据分组的发射功率。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。