scoria

基本解釋

Studying the feasibility of using graphite scoria as filling material of expressway.
探討采用石墨礦渣作為高速公路填筑材料的可行性。
Among them fill of cement of special type of 425 low hot scoria I save gel a blank on material history.
其中425低熱礦渣特種水泥填補(bǔ)了我省膠凝材料史上的一項(xiàng)空白。
Rare earth original mine, final mine, tailing mine and scoria were formed in the course of produce and letting.
摘要稀土在生產(chǎn)和排放過(guò)程中形成的原礦、精礦、尾礦和礦渣都含有一定量的汞、鉛和釷。
The additions of the two kinds of cements are industry waste residues, such as slag, scoria and coal slag.
該兩種水泥產(chǎn)品的混合材為爐渣、礦渣、煤矸石等工業(yè)廢渣。
Nonmetallic mineral resources and rocks such as beryllium, mica, lithium, clays, pumice, and scoria also occur in arid regions.
非金屬礦資源和巖石如鈹,云母,鋰,粘土,輕石和鐵渣也在干旱地區(qū)出現(xiàn)。

a rough cindery crust on top of solidified lava flows containing numerous vesicles