rare gas compound 稀有氣體化合物rare gas [化學(xué)] 稀有氣體rare flowers and trees 異花奇木rare earths 稀土族rare earth polishing powder [機(jī)械工程]稀土拋光粉 rare earth oxide 稀土氧化物;氧化稀土rare earth ore concentrate [經(jīng)濟(jì)學(xué)]稀土精礦rare earth metal complexes [化學(xué)]稀土配合物rare earth metal complex [化學(xué)]稀土金屬絡(luò)合物rare earth metal [化學(xué)] 稀土金屬rare earth intermetallic compound [物理學(xué)]稀土金屬間化合物rare earth element [化學(xué)] 稀土元素rare earth catalyst [化學(xué)]稀土催化劑催化劑耗損[環(huán)境科學(xué)技術(shù)]稀土催化劑rare earth base alloy [能源科學(xué)技術(shù)]稀土基合金rare earth n. 稀土元素rare disease 罕見病rare delicacy 異味rare breed 鳳毛麟角;稀有品種rare book 珍本書,善本rare birds 稀有之人或物;珍品