微陨石

这些微陨石和空间微小碎片可能在光学玻璃表面碰撞产生陷坑，也可能吸附在航天器光学玻璃表面造成污染。

These microaerolites and small debris in space may cause defects such as crater or be absorbed due to impact on the surface of optical glass in spacecraft .

在F－F界线有3个Ni－Ir异常层，该异常层同时也富含亲铜元素，并伴有碳同位素负异常以及微玻陨石。

Across the F F boundary there are three nickel iridium moderate anomaly beds , which are also enriched in chalcophile elements , and also accompanied with the carbon isotope negative anomalies and microtektites .

微陨星微小的陨星颗粒，特指大量坠向地球或月球表面的微陨星一些陨石中发现的细小微粒（如贵橄榄石微粒）。

A tiny particle of meteoric dust , especially one of many that fall to the surface of the earth or moon . small granule ( of e.g. chrysolite ) found in some meteoric rocks .