发布时间:2025-01-21 08:57:46
你查一下泥岩,我觉得很像。泥岩是一种由泥巴及黏土固化而成的沉积岩,一种层理或页理不明显的粘土岩。泥岩的粒度极细,肉眼无法辨认颗粒,各种颜色的泥岩都有。具吸水、粘结、耐火等性能,可用于制砖瓦、制陶等工业。
h型钢160400x200x8x13160这几个数字都代表什么呀
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