The copper alloy material contains copper, zinc, stannum and manganese.
铜合金材料中含有铜、锌、锡和锰。
A method is described to determine the stannum in catalyst by Atomic Absorption Spectrometry, and sample is dissolved by microwave.
研究了采用微波消解样品，火焰原子吸收法测定催化剂中锡含量的方法。
Stannum tetrachloride was an excellent catalyst for synthesizing dibutyl maleate and had higher catalytic activity than other catalysts.
四氯化锡是合成顺丁烯二酸二丁酯的良好催化剂，具有较高的催化活性。
Active free radicals produced during the photolysis of organo-stannum compounds have been studied by the combination of spin trapping technique and ESR spectroscopy.
本文用自旋捕捉技术与esr相结合的方法，研究了六种有机锡化合物的光解反应历程。
The existing bath analyzing methods are compared, as a result a quick and continous method for determining sodium hypophosphite and stannum(II) ion in electroless tin bath is determined.
并对现有的镀液分析方法进行了比较，确定了快速连续测定化学镀锡液中亚锡离子和次磷酸钠的方法。
This method has high sensitivity, accuracy, precision and lower limits of detection, can satisfy the requirement of determination of Arsenic and Stannum simultaneously with less time and effort.
该方法具有较高灵敏度、准确度、精密度和较低的检出限，能够满足样品中砷和锡同时测定的要求，省时、省力。
This method has high sensitivity, accuracy, precision and lower limits of detection, can satisfy the requirement of determination of Arsenic and Stannum simultaneously with less time and effort.
该方法具有较高灵敏度、准确度、精密度和较低的检出限，能够满足样品中砷和锡同时测定的要求，省时、省力。
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