The investigation was made on first quality index of raw material (PP) for producing fine PP fiber in domestic factories.

通过对国内目前所需细旦丙纶原料（ 聚丙烯）的质量指标进行调研，制定出相应的质量指标体系。

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The quality of the first polarization maintaining fiber ring is much better than the quality of other fiber rings through the scanning test using the measurement system.

分析了白光干涉仪的原理、结构以及干涉条纹特点，进行了保偏光纤环的扫描测量。

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