“rare metal”的概念、定义、翻译、参考文献-科学参考

　

单词	rare metal
释义	rare metal Encyclopedia 工学有色金属冶金释 rare metal稀有金属地壳丰度小，天然资源少；或地壳丰度虽大，但赋存状态分散，不容易被经济地提取；或物理-化学性质近似而不容易分离成单一物质，过去制取和使用得很少的金属。 Physics 凝聚态物理学固体及其性质 rare metal稀有金属 rare metal稀有金属^† Chemistry ＞无机化学＞无机化学基本概念与无机化合物＞释义 rare metal; less common metal稀有金属
随便看	speech processing system speech production speech rate speech recognition speech recognition and identification speech retrieval speech sampling speech segment perception speech signal characteristic parameters speech signal processing speech's short time stationarity speech's short-time stationarity speech synthesis speech synthesizer speech therapy speech time speech transmission index speech transmission index, STI speed speed-accuracy decomposition technique speed-accuracy trade off speed change box of machine tool Speed Climbing speed control of electrical drive speed control systems

　

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