制作一台全息照相显影密度仪，该仪器在暗室中，显示清晰，使用方便，对提高工作效率，节省材料，制作优良的全息图有很好作用。

The instrument has features of clear digital display and easy operating in dark room. It raises working efficiency, saves material, and has good effect on taking fine hologram.

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采用示差扫描量热仪(dsc)研究了复合材料中POM的结晶行为，发现GF的加入对POM的结晶温度、熔点和结晶度均无明显影响。

The crystalline behavior of POM in the composites was investigated by differential scanning calorimetry (DSC), revealing that GF does not have obvious influence on the crystalline behavior of POM.

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