N-MASS Sandstone is a type of rock which contains a lot of sand. It is often used for building houses and walls. 砂岩
...the reddish sandstone walls.
…微红的砂岩墙。
He cried, "Help!" The taller boy asked him, "After I hurt you, you wrote it in the sand, but now you carved it on a stone."
他喊道:“救命啊!”个子高的男孩问他:“我伤了你之后,你把它写在沙子上,现在却把它刻在石头上。”
USES material not qualified. Such as sand, stone, aggregate quality unqualified; In addition, mostly because cement volume expansion rate is too large (stability serious adverse).
所用材料不合格。如砂、石、集料质量不合格;除此之外,大多数是因为水泥体积膨胀率太大(安定性严重不良)。
In building sand, stone and mechanism of the breaking of metallurgical slag is obtained universal use, compared with other types of hammer apparatus production with high efficiency.
在机制建筑砂、石料以及各种冶金矿渣的破碎中更是得到普遍使用,与其它类型的碎石机相比产量功效高。
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