一旦森林覆盖开始增加，灭绝的速度应该变小。
Once forest cover does start increasing, the rate of extinction should dwindle.
发现随牵引速度的提高，PA 6微纤的平均直径变小，尺寸分布更均匀，力学性能也随之提高。
The average diameter of PA6 fibrils decreased with the increasing draw rate, and the diameter distribution of fibrils became narrow, the mechanical properties were improved.
实验结果表明：随着刮膜速度提高，薄膜平均粗糙度降低、孔径变小、结晶度增加、纵横向取向度增加。
The results showed that with increasing of casting speed, the cellulose membrane has lower roughness, larger crystallinity, and higher degree of orientation.
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