昆虫对寄主植物的识别是由于识别了植物气味的由一定组分、按照严格比例组成的化学指纹图。
Host recognition of insect is the result of perception of the chemical spectrum which constructed from definite chemical components and ratios.
不饱和树脂发光字：不饱和树脂都是三个组分的，有刺激气味，透明度太差不能做白字，长时间操作会中毒的，头晕，恶心。
Unsaturated resin luminous characters: unsaturated resin is a three component, a pungent odor, can do too opaque white, long time operation will be poisoned, dizziness, nausea.
生漆检验主要依据其表观特征以及各组分的含量差异，通过看漆质、闻气味、煎分数、试燥性、测含量判定品质之优劣。
Sap is tested According to the differences of sap compositions. Whether it is good or not by looking, smelling, boiling, and we can know it's drying and content.
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