单词	Is this your book
释义	Is this your book 这是你的书吗？
随便看	projective connection projective connection space projective control projective coordinate projective coordinates projective coordinates system projective coordinate system projective correspondence projective cover projective cover degree projective covering method projective curvature tensor projective curve projective cylinder Projective decomposition projective deformability projective deformation Projective Depth projective determinacy projective device projective devices projective difference projective differential geometry projective dimension projective dirsortion