Consultant in new york , loves his phone , a nokia 3300 , because he can listen to his favorite songs on its earphones when he rides to work on the subway . his blocky phone , which he bought six months ago for just 25 when he renewed his plan with at and t wireless , includes an mp3 player and 64 megabytes of memory , enough for about a dozen songs . mr . abelon uses the phone ' s u . s . b 丹尼尔-阿贝隆daniel abelon买了一部既可以打电话又可以听mp3的手机，他的这部诺基亚手机带有mp3播放器，内存为64mb ，可以存储十几首歌曲，他利用手机的usb接口与电脑相连，每天可以换新的歌曲，如果有电话打进来，歌曲就会自动停播，一旦电话挂断，歌曲又会自动恢复。
Based on the theory of unsaturated soil mechanics and the properties of compacted expansive soil , this paper takes the northern part k12 + 840 - k12 + 920 of nanning urban highway as an example to studies some aspects of lime improvement of expansive soil and the technology of construction . the chief content of this paper is : the lime improvement mechanism of expansive soil ; confirm the technical parameters of lime mixed from the results of test in laboratory ; the scale - down test to define the maximum effective grain size of expansive soil when it is improved by lime ; by building bank slope model and making use of finite element seepage flow program of saturated - unsaturated to calculate the examples , this paper simulates the humidity site in order to checkout the effect of lime improvement ; studies and proves that it is feasible to mix blocky expansive soil and pulverous lime , and to fill roadbed by common construction machines etc . 本文研究的工作就下述几个方面展开：用石灰改良膨胀土的机理；通过室内试验确定掺灰的技术指标；在室内进行膨胀土掺灰的最大有效粒径的模拟试验，即钙离子水试验，由此总结出“粉?块”灰?土搅拌工艺的有效性、合理性和可行性；用数值方法对路堤使用期的湿度场进行模拟，并与路堤的强度?变形的计算域耦合，以检验土性改良的效果，从而探索一种描述改良膨胀土路堤运行工况的数值方法；用现有最常用的且费用最低的施工机具，对灰?土进行“粉?块”搅拌掺和及路基的填筑施工等。
