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上蜂园 发表于 2016-10-24 10:38 # E0 S$ \5 o2 M7 ~' J l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 u6 D+ y- T& |# o2 \$ D( J6 C 很难 7 E) A5 l" h* x- Q5 i( \ L- y$ h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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