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引言锰结核于1873—76年首先为查伦杰(H.M.S.challenger)探险队所发现,此后就吸引着海洋学家及自然资源工程师们的兴
Introduction Manganese nodules were first discovered by the expedition team H.M.S.challenger in 1873-76 and have since attracted the interest of oceanographers and natural resource engineers