Hige efficiency refined design, duration, any powders and mucilage are suitable for using.
效率高，设计精巧耐用，任何粉类，粘液均可筛分。
For utility model and design,the duration of protection is even shorter, only 5 years protection.
实用新型和外观设计的保护期更短，只有5年。
This allows you to design large project structures with different phases spread over the project duration cycle.
这允许你把一个长期的大项目分成多个阶段去完成。
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