Compressing data files by removing empty database pages .
通过删除空数据库页压缩数据文件。
That 's slowly compressing his spinal cord .
血块正慢慢挤压他的脊髓。
A recurring theme of the book is the complexity of building a modern aviation infrastructure and culture in china , compressing 100 years of aviation development into a fraction of that time .
Supernova remnants play an important role in stellar evolution by enriching space with heavy elements , and triggering new star formation by compressing interstellar gas .
