关于cosχsinχ的幂级数系数
coefficient of trigonometry series
关于D的广义正定矩阵
gengealixed positive definite for D
关于环网供电的探讨
Probing in Round Network Power Supply
体系相关问题的探讨
the discussion about the relative system questions
基于IPsec的VPN的应用
the application of virtual private network which is on the basis of IPsec
玻璃的分相
phase separation in glass