The second is data layer , including data acquisition and controlled quantity output 第二層為數據層,包含數據的采集與控制量的輸出。
On the basis of referencing the universal price foundations and price patterns in international , this paper brings forward three sorts of possible reformation plans . by comparing and analyzing , this paper gives the proper pattern , controlling quantity , guiding price and competing fee , for the current situation of our country , which is put forward by construction ministry in the beginning of 1990s 在借鑒國際上常用的計價依據與計價模式的基礎上,提出了可能的三種改革方案,通過比較分析,認為建設部90年代初提出的"控制量、指導價、競爭費"的模式是比較適合我國當前國情的,并分析了其改革發展緩慢的原因。