We analyzed them and they seem to be pieces of outer spacematerial.
我们对它们（指碎片）进行了分析，它们似乎是外太空物质的残片。
2
A historical and cultural city is a long - time accumulation of history and culture. First it expresses its cultural connotation in the form of spacematerial.
历史文化名城是历史文化的长期积淀，它首先以物质空间形态向人们表达其文化内涵。
3
With the increasing demand for further space resources, people pay more attention to the space inflatable deployment techniques, in which spacematerial technique is one key problem.