地铁工程施工周期长,单线建设一般4~5年,线网建设一般30~50年。工程建设的施工围挡不可避免要占用原本有限的道路资源,影响地铁线位道路交通性干道的功能发挥。地铁施... 张郭艳,宋业利 - 规划创新: 中国城市规划年会 被引量: 1发表: 2010年 分离式自动喷淋和交通照明指示围挡 本实用新型公开了分离式自动喷淋和...
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(57)< Abstract > < Objective > Removal of installation wheel part from switch hook deviation from precisely obstructionBe possible, efficiency do the load tightening job well with the independent workerThe elastic coming out lock of the ru load tightening band is offered. < Constitution > The an...
(57)< Abstract > The image conversion device through the optical valve which becomes independent modulates or controls the plural light rays, or. Because of this, it does not increase the number of optical valves, from it offers the irregularity light ray of large number and minute resolution ...