检查客户群对特定产品的需求。进行详细研究——或研究客户对产品的行为或偏好——以确定其在特定市场中的产量和盈利能力。 Checking demand about a specific product by a customer segment. Conduct a detailed study--or research a customer behavior or preference for a product--in order to determine its production and profitability in a specific market.