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Dryer is used for drying cement limestone, clay, coal and other mixed-materials equipment.
是水泥厂用于烘干石灰石、粘土、煤粉等混合材料的设备。
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The large limestone caves are also quarried for cement.
这些大石灰岩洞也用来开采水泥原料。
《柯林斯英汉双解大词典》
Cement is made from limestone.
水泥是由石灰石制成的。
《新英汉大辞典》
The Portland Cement Association says the gas from the limestone is reabsorbed as concrete ages.
VOA: special.2009.12.01
Carbon dioxide is released in cement manufacturing when fuel is burned and limestone is heated.
Cement is basically limestone and clay.
BBC: By Ian Hardy
Most of all, they needed timber to burn limestone in order to make cement.
CNN: The Maya collapsed - could we?
It is also a mountain rich in limestone and has for decades been gouged out by cement companies.
NPR: Public Works Endanger Japan's Environment
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