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If she hits just the right pitch, a singer can shatter a wine glass. The reason is resonance. While the glass may vibrate slightly in response to most acoustic tones, a pitch that resonates with the m...
Nuclear Magnetic Resonance advance relies on microscopic detector（图）
molecular structure nuclear magnetic
2007/5/17
May 15, 2007，Detecting the molecular structure of a tiny protein using nuclear magnetic resonance (NMR) currently requires two things: a million-dollar machine the size of a massive SUV, and a large s...