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trace element analyses on numerous small micrometeorites were performed using neutron activation analysis, followed by scanning electron microscopy and microprobe analysis.
采用中子激活分析对众多微陨石进行了痕量元素分析,接着又进行了扫描电子显微镜和微探针分析。
as there are no simple and consistent relations between the leached amounts of trace elements and their total concentrations in concrete or in cement, the trace element content of cements cannot be used as environmental criteria.
由于混凝土或水泥中的浸出微量元素数量及其整体浓度之间不存在简单、一致的联系,水泥中的微量元素含量不能用作环境标准;
(d) the integrated trace element programme, which consists in providing supplements of trace elements, iron and vitamin a to pregnant women and children under the age of one.
综合微量元素方案,其中包括为孕妇和一岁以下的儿童补充微量元素、铁和维生素a。
bekhit et al, 2008- effect of processing conditions on trace elements in fish roe from six commercial new zealand fish species
bekhit et al, 2008- effect of processing conditions on trace elements in fish roe from six commercial new zealand fish species
it is anticipated that ocean acidification will produce changes in ocean chemistry that may affect the availability of nutrients and the toxicity and speciation of trace elements to marine organisms.
可以预期的是,海洋酸化将使海洋化学发生变化,可能会影响海洋生物的养分获取、海洋生物的微量元素毒性和形态。
154. a number of major and trace elements have been analysed in surficial sediments at 26 locations collected using box cores at a regular spacing of 10 x 10 in the central indian ocean basin.
154. 利用箱式岩芯在中印度洋盆地10x10的整齐间距,在26个地点收集的表层沉积物中,分析了一系列主要的微量元素。