noun 下载 🔗分享 正长石,钾长石。 Potassium aluminum silicate, KAlSi3O8, a common feldspar of igneous, plutonic, and metamorphic rocks. Orthoclase is the main feldspar of pegmatite occurrences, where it is most commonly flesh-colored. Orthoclase is used in the ceramic and glass industries and as a decorative gravel. Examples : "The countertop in our kitchen is made from granite, which contains grains of quartz, mica, and flesh-colored orthoclase. " 我们厨房的台面是用花岗岩做的,里面含有石英、云母,还有肉色的正长石/钾长石。 geology mineral material substance chemistry 与AI对话词汇游戏阅读练习