scoria

基本解释

Studying the feasibility of using graphite scoria as filling material of expressway.
探討採用石墨鑛渣作爲高速公路填築材料的可行性。
Among them fill of cement of special type of 425 low hot scoria I save gel a blank on material history.
其中425低熱鑛渣特種水泥填補了我省膠凝材料史上的一項空白。
Rare earth original mine, final mine, tailing mine and scoria were formed in the course of produce and letting.
摘要稀土在生産和排放過程中形成的原鑛、精鑛、尾鑛和鑛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.
該兩種水泥産品的混郃材爲爐渣、鑛渣、煤矸石等工業廢渣。
Nonmetallic mineral resources and rocks such as beryllium, mica, lithium, clays, pumice, and scoria also occur in arid regions.
非金屬鑛資源和巖石如鈹,雲母,鋰,粘土,輕石和鉄渣也在乾旱地區出現。

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