substitute: n.1.代替者[物],代用品;候补员;后补选手;收入(数)。2.【语法】代用词[语]。3.【矿物】转接器,短节。短语和例子There's no substitute for parents. 父母亲是没有别人可以代替的。vt.以…代替,用…代替(for);【化学】取代。 substitute A for B. 用A代B。 substitute margarine for b
It was found by ftir that boron existed as substitute atom or interstitial atom . boron contents of diamond changed from 5 ppm to 2158 ppm 通过红外吸收光谱分析,发现硼以取代原子或间隙硼的形式存在于金刚石中,并通过对红外光谱吸收率计算和xrf分析检测到硼含量在5ppm到2158ppm之间。