"In a way you do make a crater, but you fill it all in with the impactor material, " says Asphaug.

“从某种意思上说，碰撞过程中产生过环形山，但是参与碰撞的物质又把它填满了。”Asphaug说到。

youdao

This text introduces the raw material, fill a prescription and method of that make the preoxidized starch and its adhesive.

介绍了预氧化淀粉及其粘合剂制备的原料、配方和方法。

youdao

This text introduces the raw material, fill a prescription and method of that make the preoxidized starch and its adhesive.

介绍了预氧化淀粉及其粘合剂制备的原料、配方和方法。

youdao