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锰结核主要由硬锰矿、 软锰矿、褐铁矿构成。 The mineral components of nodules are mainly pyrolusite, psilomelane and limonite. | ||
七十年代在争论海洋法时，这些锰结核唤起了人们极大的兴奋。 When the law of the sea was being debated in the 1970s, these nodules aroused enormous excitement. | ||
在锰结核矿勘探和开发上，国际海底管理局已通过了两个法规。 The ISBA has adopted two regulations on the exploration and development of manganese nodules. | ||
有人指出，一部分海底布满了含有丰富镍、铜和钴及其他金属的锰结核，更甭说石油和天然气了。 Parts of the ocean floor, it was pointed out, were littered with manganese nodules containing nickel, copper and cobalt, and deposits of other metals abounded, not to mention oil and gas. | ||
次生锰氧化物主要为锰钡矿。 The main secondary manganese oxide is hollandite. | ||
卡介苗可在儿童中预防严重类型的结核，例如结核脑膜炎。 The BCG vaccine prevents severe forms of TB in children, such as TB meningitis. | ||
花垣民乐锰矿床是特大型的碳酸锰矿床。 The manganese deposits of Min Le of Huayuan are the large manganeses carbonate deposits. | ||
与锰结核像高尔夫球洞一样分散在海底不同的是，这些深海矿物层则在熄灭了的海底烟囱附近小范围内存在。 Unlike manganese nodules, which are like golf balls scattered across the seabed, these deep-ocean deposits occur in small areas around extinct hydrothermal vents. | ||
威廉·莱恩(供职哥伦比亚大学莱蒙特-道荷提地球观测所，位于纽约城外)说，锰结核比人们通常认为的要少，而且大部分位于深水。 William Ryan, of Columbia University's Lamont-Doherty Earth Observatory outside New York, says there are fewer nodules than people generally believe and most of them are in very deep water. | ||
目的探讨结肠结核临床及病理特点。 To explore the clinical and pathological features of colon tuberculosis. | ||
