The principle of PFC is introduced from three aspects: predictive model, error compensation and optimal algorithm. The basic PFC algorithm for first-order plus time delay system is developed.

从预测模型、反馈校正和优化控制三方面对预测函数控制基本原理进行了系统的阐述并针对一阶加纯滞后对象推导了单变量预测函数控制的基本算法。

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On these grounds, it puts forward the Greenland layout principle of preceding of time and order and balancing of green quantity.

并据此提出时序前置、绿量均衡的布局理念，及按氧源风道、自然脉息、生物通道、防灾网络布局的生态景观构架。

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German and French banks have already agreed in principle to roll over loans to Greece in order to give the country more time to repay its debts.

BBC: Greece crisis: S&P warns of debt default