发布时间:2025-01-19 16:09:19
知道亩数就是知道了面积数,把它们单位统一后,长乘宽等于面积,用面积(亩数)除长度即得宽。
请问新飞冰箱底部的压缩机上面的泡沫是起什么作用的呢昨天晚上我发现泡沫被老鼠咬了一个大洞
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