cobalt crust

钻结壳,Cobalt... ... ) nodule and crust 结核结壳 ) Cobalt crust 钻结壳 ) shell auger 壳钻 ...

深海钴结壳,Deep-sea cobalt... ... ) Cobalt-rich crusts 富钴结壳 ) cobalt crust 钴结壳 ) Cobalt-rich crust 富钴结壳 ...