排序方式: 共有13条查询结果,搜索用时 0 毫秒
11.
Road pavement reflectance is usually assumed to be invariant in short periods of time in some quantitative remote sensing applications.To examine its variability,reflectance sequences of concrete and asphalt pavement are measured in field for half a day in visible and near-infarecd(VNIR)spectral range using dual-beam method.As much as 20.7%and 3.52%of relative changes are found in asphalt and concrete reflectance data at 550 nm,and all VNIR bands demonstrate similar variations found to correlate with both illumination geometry and the relative portion of diffuse irradiance.In this letter,this effect is interpreted from a mathematic view.Further studies are needed to model the dynamics of reflectance physically. 相似文献
12.
13.
实验室管理系统的建立与开发 总被引:4,自引:0,他引:4
该文以VB6.0为主要编程语言,以实验室评估的六大项指标为主要模块,设计并组建一个实验室管理系统.该系统具有浏览、增加、删除、修改、编辑、保存、打印等功能,适合于高等学校实验室的动态管理。 相似文献