排序方式: 共有6条查询结果,搜索用时 0 毫秒
1
1.
2.
3.
介绍DVB-S数字卫星电视系统,简要分析了其基本原理,讨论了DVB-S系统的信源编码和信道编码,并给出DVB-S系统的基本结构。 相似文献
4.
5.
6.
高效液相色谱法测定大鼠肺及脑组织中细胞膜磷脂 总被引:9,自引:2,他引:7
A successful method for separation and quantitative determination of phosphatidylinositol(PI),phos-phatidylserine(PS),phosphatidylethanolanune(PE)and phosphatidylcholine(PC) in membrane of rat lungand brain tissues by HPLC has been developed.Under the selected conditions ,the averagerecoveries of themwere 84.14~88.43%, The contents of PI, PS, PE and PC(mean±SD)per gram of tissues in the mem-brane of normal rat lung were 201.1±20.8μg,350.6±20.0μg,162.0±11. 6μg and 24.66±2.04mg respec-tively. 相似文献
1