读带属性的点数据。这些数据是由一个塑料中空成型过程和两个逻辑部分组成：一模具和型坯。这是热塑料型坯正在成型，而周围型坯模夹紧，形成它的形状-Read some data with point data attributes. The data is from a plastic blow molding process and consists of two logical components: a mold and a parison. The parison is the hot plas