“refractory metals”的概念、定义、翻译、参考文献-科学参考

单词	refractory metals
释义	refractory metals Encyclopedia 工学难熔金属释 refractory metals难熔金属熔点高于2400℃的钨（W）、钽（Ta）、钼（Mo）、铌（Nb）、铼（Re）等金属的总称。以难熔金属为基体，添加其他元素的合金称为难熔合金，其使用温度在1200℃以上。
随便看	covalent coordinate bond covalent cross-link probe covalent crystal covalent diastereoisomers covalent glass covalent graph covalently bonded network covalently closed circular DNA covalently regulatory enzyme covalent modification of regulation covalent network covalent organic framework polymer covalent organic polymer covalent radius covariance covariance analysis covariance distribution covariance function covariance functional covariance matrix covariance operator covariance spectrum covariance stationary process covariance structure analysis covariance window

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