4 个月
ZME Science on MSNWhy does nature keep making perfect cubical pyrite crystals?Each crystal’s edges, faces, and angles are symmetrical, resulting in pyrite’s iconic, well-defined shape. Unlike more ...
一些您可能无法访问的结果已被隐去。
显示无法访问的结果一些您可能无法访问的结果已被隐去。
显示无法访问的结果