烟斑
yān bān
- Smoke spot;korron
烟斑
烟斑[yān bān]
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以评价它的实用性。首先通过烟斑清除率的记录，比较两种牙刷的去烟斑效果；
Firstly , the efficacy of the toothbrush was studied by scored up the plaque removing rate ;
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大豆上烟环斑病毒的塑珠酶联免疫吸附测定
On the bead ELISA technique for detecting tobacco ring spot virus from soybean plants
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利用调查与相关研究，对贵州烟区南美斑潜蝇的适生性及危险性进行了综合分析。
The adaptability and danger of Liriomyza huidobrensis Blanchard were comprehensively analyzed in Guizhou flue-cured tobacco growing regions .