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EvenOdd
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发表于:2022-07-02 07:24|只看楼主
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" 电瓶车环保?"

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Deepspace_01 发表评论于 2022-07-02 03:12:44


电瓶车啊猫啊狗都能造。既没有发动机,也没有变速箱。和内燃机的精致工艺不沾边。从蔚来买个锂电池,罩个壳子就走了。可这锂电池的技术瓶颈使电瓶车只能城市代步。环保人士所谓电瓶车环保也是个假命题。别说中国,就是美国,60%以上的能源也是化石能源。把化石能源先转化成电能,再转化成化学能储存在电池里。再转化成机械能驱动电瓶车。初中学过能源转换吧?效率有多高清楚吧?三次能源转换得浪费多少能源?为何不让化石能源一次转化成热能驱动内燃机?这还不说电池分解的污染。电瓶车环保?扯啦。


https://www.wenxuecity.com/news/2022/07/02/11663934.html

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EvenOdd
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发表于:2022-07-02 08:51|只看楼主
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" Plastic bags were created to save the planet, inventor’s son says


‘To my dad, the idea that people would simply throw these away would be bizarre,’ claims Raoul Thulin


https://www.independent.co.uk/environment/plastic-bags-pollution-paper-cotton-tote-bags-environment-a9159731.html


Plastic bags were invented to save the planet, according to the son of Swedish engineer Sten Gustaf Thulin who created them in 1959.

The bags were developed as an alternative to paper bags, which were considered bad for the environment because they resulted in forests being chopped down.

"

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