瀝青岩 lìqīngyán pitchstone Definitions Defs Origin Strokes Stroke Words Sentences Sents 沥青岩 瀝青岩 lìqīngyán pitchstone a volcanic glass with a dull, pitch-like luster asphaltite a hard, solid form of naturally occurring bitumen
沥青岩 瀝青岩 lìqīngyán pitchstone a volcanic glass with a dull, pitch-like luster asphaltite a hard, solid form of naturally occurring bitumen
