发布时间:2025-01-25 04:28:29
设钢板的长宽厚分别为a、b、c,钢板的单价为d元/吨,钢材的密度为p=7850kg/立方米,则45号钢板的价格为:
(axbxcxp/1000)xd。
注意a、b、c要以米为单位。
我的长虹液晶电视的遥控器坏了不知道哪里可以买到这种遥控呢普通的万能遥控还用不了售后这里还没有
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