“liquid nitrogen”的概念、定义、翻译、参考文献-科学参考

单词	liquid nitrogen
释义	liquid nitrogen [`lik·wǝd `nī·trǝ·jǝn] ^CRYOGENICS Nitrogen that exists as a liquid at atmospheric pressure, at -195°C (77.4 K); used in research work, cryogenics, and cryosurgery.
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