名词 pt:

1. a heavy precious metallic element; grey-white and resistant to corroding; occurs in some nickel and copper ores and is also found native in some deposits

PTVn.穿透试验飞行器(北极星试验导弹)Ptabbr.[化]元素铂的符号（=platinum）pterygium tenue薄翼状胬肉, 膜状翼状胬肉pterygoid ulcer翼状突溃疡pterysium/SU翼状胬肉／外科学pterygoid plate[医] 翼突内侧板pterygospinosus[医] 翼棘突(变)Ptilodactylidae趾翅甲科Pterocoma loczyi洛氏脊漠甲Pteropus vetulusn.新喀里多尼亚狐蝠pteroylglutamate[医] 蝶酰谷氨酸盐, 叶酸盐ptincipal normal主法线