为了提高电解质的折射率反差，以合成蛋白石为模板剂制备反相蛋白石的方法，最后论述了光子晶体的应用前景。
In order to increase the refractive index contrast of the electrolyte, inverted opal is prepared by utilizing a synthetic opal as a template. Finally, we discuss applications of photonic crystals.
为了避免在冲洗高反差负像影像过程中产生银的沉积，形成银渣，可采用下列四项措施，效果良好：1采用主显影剂；
For preventing the formation of silver mud sedimented during the processing of hi -contrast negative image, the following four measures are useful and effective:1. using principal developing agents;
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