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上蜂园 发表于 2016-10-24 10:38 ( ^) H g. q9 J8 b. V7 }% Y& ~跷跷板方案也行不通,当里面有蜂在上面时,外面的蜂就不能进来,活门就变死门了
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上蜂园 发表于 2016-10-24 10:17 3 O3 T/ _* ?9 w. d5 Y8 C2 {很难7 `0 z( ^# Y8 d Z9 x. M 一、材料问题:踏板为弹性塑料片要做到,一只蜜蜂一蜡娥的重(还有风压,雨滴,水的吸力等)就能开关 ...
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