Porous glass was prepared by thermally treating sodium borosilicate glass for different time,the effect of thermal treatment on pore size distribution was discu
针对欧洲中程天气预报中心实时大气数据中由于水平及垂直分辨率变化所引起的大气压跳跃,利用再分析大气数据(ERA-Interim)及去平滑球谐分析方法计算重力恢复与气候实验卫星(gravity recovery and climate experiment,GRACE)大气去混频模型,从谱域、空域角度及利用主成分分析方法比较其与标准大气与海洋去混频模型的差距,并采用星间距离变率残差作为标准衡量两种模型