On the basis of analysis on ionic compositions of injected water and formation water. The performance of polyapartic acid scale inhibitor is contrasted with that of other inhibitors.
在分析注入水和地层水离子成分的基础上，比较了聚天冬氨酸与其他几种常用阻垢剂的阻垢性能。
The formation of scale follows the four steps of literature review, expert advice, pre-tested, analysis of the questionnaire's reliability and validity.
通过文献回顾、专家意见法、预测试、问卷信度效度分析四个步骤，探索形成本研究的正式问卷。
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