词汇	platinum bronze
释义	platinum bronze 铂青铜
随便看	projective change projective class group projective closure projective collinear projective collineation projective comodule projective cone projective conformal geometry projective conic projective conics 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