发布时间:2025-02-03 04:48:34
(直径-壁厚)x壁厚x0.02491=(重量)公斤/米
(219-6)x6x0.02491=32公斤/米
32公斤/米x6=192公斤
江宁波市宁海县一民房发生火灾致7人死亡此次火灾造成的损失有多大
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