发布时间:2025-01-28 00:49:13
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太阳能集热棚利用白天太阳能的热将室内温度升高,然后保温,其实就是热储存效应,
我们做的时集热器水循环,利用白天太阳能将水加热,循环给室内取暖,增加蓄热墙体,利用水的比热高,升温降温慢的原理,综上所述,太阳能集热棚就是利用热传导效应。
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两部门明确:2023年小规模纳税人月销售额10万元以下免征增值税
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