VARTM工艺成型的固体火箭发动机壳体复合材料连接裙段构件纤维体积含量较低，复合材料力学性能不佳。
The composite skirts for solid rocket motor shells fabricated by VARTM (VacuumAssisted Resin Transfer Molding) had poor mechanical properties because the fiber volume fraction was very small.
目的：观察止喘胶囊对哮喘模型大鼠气道壁胶原、纤维连接蛋白含量及气道壁厚度的影响。
Objective: an observation the effect of ZhiChuan Capsule on deposition of collagen and fibronectin in airway wall in rat with asthma models.
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