N a rare stony meteorite that consists mainly of silicate minerals and has the texture of igneous rock but contains no chondrules 无球粒陨石 → compare chondrite
Aeroliths are further subdivided into two classes: chondrites and achondrites.
陨石进一步细分为两类：球粒状陨石和无球粒陨石。
Meteorites generally fall into one of two categories—chondrites and achondrites.
陨石通常分为两类：球粒陨石（chondrites）和非球粒陨石（achondrites）。
Irons, stony-irons, chondrite, and achondrites are by no means equally abundant among observed meteorites.
（真题）铁矿、陨铁石、球粒状陨石及无球粒陨石在可观测到的陨石中绝不多见。
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