The exchange of commodities is the major cause for the output and input of energy and material between agro-ecosystems.
商品交换是造成农业生态系统间的能量和物质输出及输入的主要原因。
2
A bi - directional path comprised of an input connection and an output connection, both having the same exchange interface.
由输入连接和输出连接组成的一种双向通路，两个连接都有同一交换机接口。
3
From practical application, adaptive fuzzy identification and control models of proton exchange membrane fuel cell (PEMFC) were developed based on input-output sampled data and experts' experience.