The author sums up the usual problem of each field during the copying of CALIS Chinese catalogue through working practice, analyzes the problem and then puts forward the setting methods.
笔者通过工作实践，总结了套录CALIS中文书目数据中各字段出现的常见问题，并对这些问题进行了分析，提出了解决方法。
Maintenance manners are adopted according to the field -working situation. Processing methods are put forward accordingly through analyzing common accidents.
根据现场实际工作情况，对其采取针对性的维护措施，分析常见故障并提出相应的处理方法。
Through in-situ measurements in an oil field. the working conditions of beam unit motor were analyzed to discuss several methods of electric energy saving.
通过在油田的实地测量，对所得到的抽油机工况进行了分析；讨论了抽油机电气节能的几种方法；
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