The optimal control is an important ramify of auto-control theory, the optimal control problem of Singular bilinear systems is studied in this paper firstly.(最优控制是自动控制理论的重要研究分支，本文首次对广义双线性系统的最优控制问题进行研究。)
These plants ramify early and get to be very large.(这些植物很早就分枝，因而可以长得非常大。)
Shifts in forest species composition ramify through the ecosystem in many ways because tree species have different, often unique properties.(由于树种具有不同的、往往是独特的特性，森林物种组成的变化以多种方式影响着生态系统。)
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