closed type的用法和樣例：
例句
- Above result revealed that multidirectional closed die forging of spiral bevel gear was feasible.
揭示了使用復動閉式模鍛模具成形小錐角螺旋傘齒輪的可行性。 - The significance of treating spontaneity pneumothorax witheguipment of closed thoracic drainage made by our selves.
自製胸腔閉式引流裝置治療自發性氣胸初步探討。
