If the gross of the carbon, nitrogen and oxygen is low enough, the cermets have no magnetism. 碳、氮、氧总含量较低时,金属陶瓷合金没有磁性。
The paper reviewed the selenium catalyzed carbonylation reaction such as the carbonylation of carbon, nitrogen, oxygen and sulfur containing compounds and high selective reduction of some compounds based on the Se / CO / H 2 O system and introduced some new progress. 综述了非金属硒在含碳、氮、氧、硫类有机化合物中的催化羰基化反应,以及在Se/CO/H2O体系中一些有机化合物的高选择性还原反应,介绍了近期的一些新进展。
The experimental results were showed that carbon, nitrogen, oxygen and hydrogen are four basic elements in two samples. 结果表明,两种样品中均含有碳、氢、氮和氧等四种成分。
The binding states of three typical elements of carbon. nitrogen and oxygen in carbon film prepared from the polyacrylonitrile ( PAN ) film were analyzed by using X ray photoelectron spectroscopic technique. 用X射线光电子能谱(XPS)技术分析了由PAN(聚丙烯腈)薄膜所制得的炭膜中碳、氮和氧三种元素的结合状态。
Effect of Carbon and Nitrogen Atoms to Oxygen Precipitation 碳和氮原子在氧沉淀中的作用