Since the discovery of oceanic manganese nodules during the expedition of the British ocean-going ship Challenger from 1872 to 1876, research and development for seabed manganese nodules have never ceased owing to the...Since the discovery of oceanic manganese nodules during the expedition of the British ocean-going ship Challenger from 1872 to 1876, research and development for seabed manganese nodules have never ceased owing to the huge economic inducements. Manganese nodules are the black or dark brown, spherical or massive Mn-bearing ores, deposits of which are found on the sea bottom. The nodules are a mixture of silicate and insoluble potassium permanganates （also with sub-Ti, Fe and Na permanganates） that contain more than 30 kinds of metallic elements, among which those of greatest economic interest are Mn （27-30%）, Ni（1.25-1.5%）, Cu（1- 1.4%）, Co（0.2- 0.25 %）, Fe, Si, and AI, with minor amounts of Ca, Na, K, Ti, B, H and O.展开更多
China will shift its monetary policy stance from relatively loose to prudent next year,the Political Bureau of the Communist Party of China(CPC) Central Committee decided Friday. The meeting,chaired by President Hu Ji...China will shift its monetary policy stance from relatively loose to prudent next year,the Political Bureau of the Communist Party of China(CPC) Central Committee decided Friday. The meeting,chaired by President Hu Jintao,also展开更多
AMONG his many titles, which include honorifics like Secretary General, Vice Minister and Ambassadorial Commercial Counselor, Africa Expert may be the best tag for Wei lianguo.
文摘Since the discovery of oceanic manganese nodules during the expedition of the British ocean-going ship Challenger from 1872 to 1876, research and development for seabed manganese nodules have never ceased owing to the huge economic inducements. Manganese nodules are the black or dark brown, spherical or massive Mn-bearing ores, deposits of which are found on the sea bottom. The nodules are a mixture of silicate and insoluble potassium permanganates （also with sub-Ti, Fe and Na permanganates） that contain more than 30 kinds of metallic elements, among which those of greatest economic interest are Mn （27-30%）, Ni（1.25-1.5%）, Cu（1- 1.4%）, Co（0.2- 0.25 %）, Fe, Si, and AI, with minor amounts of Ca, Na, K, Ti, B, H and O.
文摘China will shift its monetary policy stance from relatively loose to prudent next year,the Political Bureau of the Communist Party of China(CPC) Central Committee decided Friday. The meeting,chaired by President Hu Jintao,also
文摘AMONG his many titles, which include honorifics like Secretary General, Vice Minister and Ambassadorial Commercial Counselor, Africa Expert may be the best tag for Wei lianguo.
