The 3-D numerical prediction proved that the copper pin fin structures have 24%-34% higher convection heat transfer coefficients with 10%-16% pressure drop increase.
在三维空间上的对流换热模拟表明，铜制的针肋结构的换热系数要高出百叶窗翅片24％-34％，而流阻仅高出10％-16％。
The damage to structures with multiple pin-holes and cracks is a typical form of damage that exists in airplanes of old age and many other engineering structures.
多孔多裂纹结构的损伤是老龄飞机和许多工程结构中存在的一种典型损伤形式，它严重影响着结构的完整性和使用安全。
Based on the structural determination of prestress pin joint assembly, the structural characteristics of the prestress pin joint structures are discussed in this paper.
预应力杆件体系的结构判定是预应力结构设计的基本问题，更是新型预应力杆件结构体系研究的重要基础理论。
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