The trajectory problem was cast as the optimal control problem and Pontriaghin Maximum Principle was used to obtain first order necessary condition.
我们将此弹道问题转化成最优控制问题，通过极大值原理得到最优弹道的一阶必要条件。
Total starch and grain starch content directly connected to water-logging the highest, while the branched-chain starch content in order to control the maximum.
籽粒总淀粉和直连淀粉含量以渍水最高，而支链淀粉含量以对照最高。
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