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www.hi-net.zaq.ne.jp/...UST2.htm - Cached
This link has been bookmarked by 2 people . It was first bookmarked on 18 Jun 2008, by Naoto Sakakibara.
超音波っておもしろい。いろいろできるんだね。特性をもう少し深く調べてみるのも悪くない。
engineering
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