tree stage

The four stages power amplifier is using tree type network for power combination. Four paralleled transistors are matched with load-pull impedance at the last stage for maxium output power.

功率放大器采用4级放大，树状功率合成网络，末级是4个晶体管并联并按负载牵引匹配，在单片上获得尽可能大的功率输出。

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in shrub-tree stage , the species diversity in tree layer was lower than that of shrub layer .

灌乔林过渡阶段群落乔木层物种多样性指数低，而灌木层多样性指数高。

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In natural forest, pioneer tree species are more susceptible to plant pathogens than climax species. Plant community in early succession stage is susceptible to plant pathogens compared to climax community.

在天然林中，先锋树种比顶极树种对病原菌更敏感，群落演替的早期阶段对病原菌比较敏感。

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only if we build up an integrated tree-stage superviser system , we can choose a date to recover the national debt and future trade.

只要建立起完善的期货市场三级监管体系，就可以择期恢复国债期货交易。

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all trees reaching the "young tree" stage are sold.

所有的树达到“年轻的树”阶段都卖出去了。

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A multi-stage planning approach considering uncertainty is put forward based on improved minimum-cost spanning tree algorithm.

为了在规划过程中考虑负荷的不确定性,提出了一种基于改进最小生成树算法的多阶段不确定性规划方法.

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