There are high correlation between service value of per unit and type of ecosystem.
单位面积服务价值的大小与生态系统的类型有着高度的相关性。
The machines are highly customized and represent a relatively high value per unit.
这些机器有很高的定制性并具有相对高的单位价值。
The machines are highly customized and represent a relatively high value per unit.
这些机器有很高的定制性并具有相对高的单位价值。
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