“hafnium”的概念、定义、翻译、参考文献-科学参考

单词	hafnium
释义	hafnium [`haf·nē·ǝm] ^CHEMISTRY A metallic element, symbol Hf, atomic number 72, atomic weight 178.49; melting point 2000°C, boiling point above 5400°C.
随便看	three-decision problem three-dimensional three-dimensional braiding three-dimensional display system three-dimensional flow three-eighths rule three-index symbols three-input adder three-input subtracter three-jaw chuck three-j number three-junction transistor three-kiloparsec arm three-layer diode three-level laser three-level maser three-level subroutine threeling three-phase circuit three-phase current three-phase four-wire system three-phase magnetic amplifier three-phase motor three-phase rectifier three-phase seven-wire system

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