impurity element

establishment of measuring method on impurity element in copper catalyst

铜催化剂中杂质元素测定方法的建立

methods for the analysis of pewter - determination of alloying and impurity element contents by atomic spectrometry

锡铅合金的分析方法.原子光谱法测定合金和杂质素的含量

Negative-ion element impurities breakdown model of HfO-2 optical thin film is reported. We believe the main impurity element in thin film comes from the coating material.

探讨了HfO2薄膜中负离子元素杂质破坏模型，并得出薄膜中的杂质主要来源于镀膜材料。

Furthermore, by analyzing proportion of iron and magnesium, some information of mineral structure and the color exuding of the jade from Fuquan hill can be obtained without any interference from impurity element.

分析福泉山软玉铁镁占位比S，可排除杂质元素干扰，得到矿物结构和沁色信息。

the effect of impurity element fe on the mechanical property, corrosion and aging of sand-cast za27 alloy has been investigated.

本文考察了杂质元素铁对ZA27合金的机械性能和腐蚀老化性能的影响；

The results indicated that the defects was caused by pitting corrosion of impurity element iron in silver coin by environmental chloride compound.

结果表明，在银币缺陷部位的腐蚀坑内存在以铁元素为主的物质，基材中的铁元素与外界的氯引起银币的腐蚀，造成了表面缺陷。