期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
试析国外公路收费系统的发展趋向——沪杭高速公路(上海段)收费系统联合设计与相关考察的体会
1
作者 乐茂生 顾菊华 《上海公路》 1998年第B12期286-288,共3页
一、前言 国内许多高速公路招标项目中有关收费系统的总体要求往往都附有几条预留今后系统扩展升级的要求,除了简单的扩充车道数目外,最常见的要求不外乎以下四条: 1)采用自动判分车型的检测设备代替目前的收费员人工判分车型的做法。
关键词 国外 公路收费系统 发展趋向 泸杭高速公路 上海段 联合设计
下载PDF
SUMMARY OF CHINA-MADE X-RAY THICKNESS GAUGES FOR STEEL INDUSTRIES
2
作者 乐茂生 花宗正 《Nuclear Science and Techniques》 SCIE CAS CSCD 1993年第2期86-90,共5页
There are two kinds of China- made X- ray thickness gaugemeters i.e. dual beam- dual detector system and single beam- single detector system- SM series, the latter is used dominantly in Chinese steel industries. The p... There are two kinds of China- made X- ray thickness gaugemeters i.e. dual beam- dual detector system and single beam- single detector system- SM series, the latter is used dominantly in Chinese steel industries. The performance comparison between domestic and foreign instruments as well as its developments and applications is presented in this paper. 展开更多
关键词 X- RAY thickness gaugemeters USES PERFORMANCE PERFORMANCE testing STEELS Industrial plants Working conditions
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部