Testing of plastics ; determination of the free phenol in phenolic moulding materials ; photometrical method 塑料的试验.酚醛模塑材料中游离酚醛含量的测定.光度
2.
The structure and the optical functions of porous anodic films were studied by xrd , sem and spectro - photometrical means 摘要采用x射线衍射、扫描电镜( sem )和光谱分析等测试技术，研究了多孔氧化铝介质膜的组成、结构以及光功能特性。
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