并行产品研制
concurrent product development
新产品研制
development of new product
水表产品样机研制
sample product technique of research and developme
产品产量的优化组合
Optimization combination of product quantity
产品品类选择准则
Product class’s choice criteria
产品品牌差异
product brand differentiation
产品品质及经济效益
quality and economical benefit of a product