model designations

例句：

1. 1.The company's new product line has been officially unveiled with a series of model designations.
   该公司新推出的产品系列已经正式公布，并配有一系列模型名称。
2. 2.The team is working on developing a new model designation for the upcoming project.
   团队正在开发一个新的项目模型设计标识。
3. 3.The model designations are used to identify different versions or models of a product.
   模型设计标识用于识别产品的不同版本或型号。