For this reason, scholars have put forward a variety of methods to improve it. Most of them focused on the optimization at the design level.
为此学者们提出了许多改进方案,其中大多数集中在设计层次的优化。
参考来源 - 基于体绘制的三维可视化算法的优化实现研究·2,447,543篇论文数据，部分数据来源于NoteExpress
在设计层次化网络时，一定要注意，不要太保守。
Be careful when designing hierarchal networks that you do not oversubscribe too much.
从细节入手，提升面料的设计内涵和设计层次。
From the details, upgrading the design of fabric content and design level.
但是，从这个设计层次上看，销售是可行的——没有根本性的障碍。
But at this level of design, the sales appear to be do-able — you cannot see any showstoppers.
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