只需要多几次这类切除，就能达到带有单一环状线粒体祖先全部功能性基因的18条微型染色体。
It would take just a few more excision events to arrive at 18 mini chromosomes with all the functionality of their single-circle ancestor.
弧形止推环吸收内部压力施加的全部推力。
Segmental thrust ring absorbs all the thrust applied by internal pressure.
找到系统中的全部反馈环是系统动力学模型分析的基础。
To search all feedback loops of a system is the basis of system dynamics model analysis.
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