在电动工具的具体应用中，聚酰胺是通常用于罩壳的原料，当与零部件设计相结合时，聚酰胺原料在满足结构及防护标准方面扮演了一个非常关键的角色。
In the specific case of power tools, polyamides are used in housings where in combination with part designs they play a critical role in meeting structural and protective criteria.
先制备具有均一链长的含有酰胺键的硬段单体，然后与二元醇进行缩聚反应生成酯键是制备性能良好的聚酰胺酯的较好途径。
Ester bond can be formed through the polycondensation of hard segment monomer with uniform segment length containing amide bond and dihydric alcohol, which is a better way to prepare polyesteramide.
研究了茶多酚粗品的聚酰胺色谱法分离条件，考察了聚酰胺的粒度和上样量与聚酰胺的量比对(-)- EGCG提取率的影响。
The polyamide chromatography separation conditions of crude polyphenol were investigated. The influence of particle size and amount of polyamide used on extraction yield of (-) -egcg were studied.
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