composition n. 1.作文(法),作诗(法),作曲(法);作品,文章;乐曲;文体,措辞。 2.编制;结构,构造,组成,组织;成分;合成物。 3.素质,性格。 4.构图,配合,布置。 5.妥协,和解(条件);(私下了结的)和解费,(议定的)偿付额。 6.【印刷】排字。 7.【逻辑学】综合法,合成推理;【语法】复合法;【社会学】结合体。 Latin prose compositions 拉丁散文作品。 a stone composition石刻品。 He has not a spark of generosity in his composition. 他(性格中)一点肚量也没有。 a composition of 5sh. in the pound 每镑照赔五先令。 composition for violin 提琴曲。 composition of a picture 绘画构图。 composition of air 空气成分。 make a composition with (sb.'s creditors) 和(各债权人)议定偿还办法。
sample n. 1.样品,货样。 2.标本;榜样,实例。 3.【统计】典型取样,抽检查。 4.【电讯】信号瞬时值。 5.【冶金】 〔 pl. 〕 锌华。 That is a fair sample of his manners. 那就是他的典型态度。 a light sample 光脉冲。 up to sample 1. 和样品一样[相符]。 2. 可以接受的,可以同意的。 vt. 从…取样,从…抽样;提供;货样;对…进行抽样检查。
The spectral lines emitted from these species can be used to determine the sample composition . the wavelengths observed are characteristic of the individual elements present in the sample , and their intensities are related to the concentration of the corresponding species in the sample 高功率密度的激光使样品表面汽化,产生处于激发态的原子和离子,而激发态原子和离子的发射谱线可用于样品成分的鉴定,发射谱线的强度与该原子对应的元素在样品中的含量有关。
The sample composition was analyzed by means of tg and x - ray diffraction . the following conclusions can be drawn from the experiments : given conditions , the sample powder that has the same xrd data as the standard fetioa can be gotten when use any method mentioned above ; the key in synthesis is to avoid the oxidation of fe2 + , so the whole process should performed under vacuum or neutral atmosphere , samples used by this study were prepared under nitrogen atmosphere ; the heat - treated time and temperature have some influence on the sample powder , results show that the proper time and temperature is 120 minutes and 1100 respectively 研究结果表明:在合适的反应条件下,用上述三种合成方法都能得到xrd数据与标准fetio _ 3物相基本吻合的粉体;合成反应需要克服的主要问题是防止体系中fe ~ ( 2 + )的氧化,因此,整个反应必须在真空或者非氧化性气体保护下进行,本研究需要的样品是在高纯从保护下合成的;煅烧的时间和温度对最终的产物也有一定的影响,研究发现:合理的煅烧时间和温度分别为120分钟和1100 。