硫化物集体大部由磁黄铁矿 、 镍黄铁矿 、 黄铜矿及黄铁矿组成.The sulfide assemlage consists largely of pyrrhotite, pentlandite, chalcopyrite, and pyrite.某些贱金属以及金常常与磁铁矿和磁黄铁矿这类磁性矿物一起被发现.Base metals and gold are often found in association with magnetic...
A series of movies will be shown to commemorate the 30th anniversary of his death.为纪念他逝世30周年，有一系列的电影要上映。This building was built to commemorate the Fire of London.这栋大楼是为纪念“伦敦大火”而兴建的.A special version of "Casablanca" is be...