Results showed that the coating problem of hot-dip zinc plating workpiece was improved evidently by using the degassing agents MPP230 and MPP620 containing a primary component of polyethylene wax.

结果发现，主要成分为聚乙烯蜡的脱气剂MPP230与MPP620可以明显改善热浸镀锌件涂装存在的问题。

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The primary research of this paper is about the controlling of double-fed wind generator under the ideal voltage and the small network voltage dip.

本文主要研究双馈风力发电机理想电压及电网电压小值跌落时控制的相关问题。

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The results show that the strata structure of dip pillar area and the asymmetric I-shaped spatial strata structure formed by excavation are primary causes of abnormal stress concentration.

研究结果表明，下山煤柱区地层结构与开采形成的“不对称工字形”覆岩空间结构是造成异常应力集中的根本原因。

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