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關注:1
2013-05-23 12:21
求翻譯: レア?アースは「希土類」とも呼ばれ、元素番號57のランタン(La)から71のルテチウム(Lu)までのランタノイドにスカンジウム(Sc)とイットリウム(Y)を含めた17元素の総稱です。是什么意思?![]() ![]() レア?アースは「希土類」とも呼ばれ、元素番號57のランタン(La)から71のルテチウム(Lu)までのランタノイドにスカンジウム(Sc)とイットリウム(Y)を含めた17元素の総稱です。
問題補充: |
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2013-05-23 12:21:38
Also known as "rare earth" Rare Earth is a collective term for 17 elements, including the (y) yttrium and scandium (sc) in lanthanides up to (lu) lutetium of 71 from (la) of lanthanum element number 57.
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2013-05-23 12:23:18
Rare earths are also referred to as the "rare earth" element number 57 of the lantern (La) and 71 of lutetium (Lu) in the lanthanide scandium (Sc) and yttrium (Y), including 17 elements.
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2013-05-23 12:24:58
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2013-05-23 12:26:38
Rare earth, also called a "rare earth", including the (Sc) scandium and yttrium (Y) until 71 lutetium ( Lu ) Lanthanide element number 57 lanthanum (La) from 17 refers to the elements.
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2013-05-23 12:28:18
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