英语词汇“D region”是什么意思，“D region”的读音、用法及例句翻译-烛光网

词汇	D region
释义	D regionn.（名词） The region of the ionosphere about 40 to 65 kilometers (25 to 40 miles) above the earth.D区：电离层中处于地球表面以上40至65公里(25至40英里）的部分
随便看	relativistic relativists relativities relativity relator relator relators relax relax relaxant relaxants relaxation relaxations relaxation time relaxed relaxed relaxer relaxers relaxes relaxin relaxing relaxins relay relay re-lay

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