“U valley”的概念、定义、翻译、参考文献-科学参考

单词	U valley
释义	U valley [`yü ´val·ē] See <<U-shaped valley>>
随便看	swirl error swirl flowmeter Swiss pattern file switch switch angle switchback switchblade knife switchboard switched capacitor switched circuit switched line switched-message network switched network switch function switchgear switch gene switch hook switching switching center switching circuit switching control switching device switching diode switching gate switching key

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