McCain also says Iraq must be prevented from acquiring a nuclear weapon.麦凯恩还说,一定要防止伊朗获得核武器.McCain spent five and a half years in a prisoner of war camp in Vietnam.麦凯恩在越南的战俘营里度过了5年半的时间。Connecticut Independent Senator Jose...
The contents of organic material, limonite and manganese hydroxides influence the variation of ore element.有机物 、 褐铁矿和氧化锰的含量影响着成矿元素含量的变异.The mineral components of nodules are mainly pyrolusite, psilomelane and limonite.锰结...