繼可見光、紅外線、紫外線以外的另一種新型傳播媒介。
哈哈!
•
和和。。。PM2.5顆粒小於所有的無線電波波長(長波、中波、短波、超短波、微波):))
-老看客-
♂
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01/29/2013 postreply
08:31:24
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