Improvements in the cold - end - to - hot - zone resistance ratio between the original DB and new DB has been dramatic.

DB型硅碳棒的冷端部和发热部的电阻比已经发生了巨大的改进.

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Resistance ratios to deltamethrin, beta - cypermethrin, cypermethrin, cyfluthrin and DDVP were ( 1.52 ) - ( 8.28 ) , but there are very susceptive to propoxue with resistance ratio ( 0.92 ) - ( 1.13 ).

对溴氰菊酯 、 高效氯氰菊酯 、 顺式氯氰菊酯 、 高效氟氯氰菊酯、敌敌畏已不同程度地产生抗性,抗性倍数在 1.52 ~8.28之间;对残杀威敏感, 抗性倍数在0.92~ 1.13 之间.

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