In order to determine the product platform in product family design, the concept of Function Similarity was discussed, which was aimed at the function similarity of different products, and a new method to construct platform of function similar products was put forward based on bottom-up approach.

Chen argues that"functional equivalence"is an idealistic standard,and that when a translator finds it hard to reach the"equivalence",he has to seek"functional similarity"as the realistic standard.

In practice as the generally accepted translated terms cited in this paper show,what a translator always looks for is only"partial functional equivalence"or"functional similarity",when real "funct.

The paper analyzes the problems and the shortages of current construction of emergency functions of national economic mobilization,and discusses the construction of its system,alarm,reservation and counter plan.