In this paper, we discussed each topic of energy imput and output in fruit growing and suggested how to economize the energy resource in fruit production.
本文分析了果树栽培能量输入和输出的各个环节，并提出了果树生产节能的途径。
This article introduces the methods concluded from practice about the expanding and saving of data units of imput and output capability of PLC.
介绍了人们在实践中总结出的关于可编程序控制器的输入输出点数的扩展及节省的方法。
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