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(1)宇宙中含量最高的元素是氢.(2)地壳中含量最高的元素是氧[w(O)=48.60%].(3)地壳中含量最高的金属元素是铝[w(Al)= 7.73%].
(1) The most abundant element in the universe is hydrogen. (2) The highest element in the earth’s crust is oxygen [w(O) = 48.60%]. (3) The metal element with the highest content in the earth’s crust is aluminum [w(Al)] = 7.73%].