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Its adult stage , taking the fourth generation as the example , lasts 6.25 ( 3 - 14 ) , egg , 4.64 ( 4 - 6 ), larva, 11.92 ( 10 - 15 ) and pupa , 13.83 ( 11 - 18 ) days.
幼虫:11.92 ( 10—15 ) 天;蛹:13.83 ( 11—18 ) 天.
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The formulation of paraffin base the fourth generation diesel locomotive Oil containing zine was presented.
介绍了石蜡基含锌内燃机车四代油的配方研究.
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