问题 1.(需回答的题目) question; problem 解答问题 solve a problem; 提问题 ask a question2.(需研究解决的矛盾等) problem; matter 问题的关键 the heart of the matter; key to the question; key to the solution of a question; 问题的实质 essence of the problem [question]; 问题成堆 a satchel [a batch] of questions; 难问题 a troublesome problem; 共同关心的问题 questions of common interest; 关键问题 a key problem; 思想问题 an ideological problem; 悬而未决的问题 an outstanding issue; 原则问题 a question of principle; a matter of principle; 枝节问题 minor issue3.(事故或意外) trouble; mishap; sth. wrong 解决麻烦问题的能手 trouble shooter; 没出什么问题 without any mishap; 那机器有点问题。 something is wrong with the machine.4.(重要之点) the point; the thing 问题不在这里。 that is not the point
成问题 be a problem; be open to quesiton (doubt; objection) 完成生产指标不成问题。 we will fulfil the quota without fail. 雨再不停, 明天的比赛就要成问题了。 if the rain doesn't stop, i doubt if we can have the game tomorrow. 在我国大学毕业生就业不成问题。 getting a job is no problem for college graduates in our country
讨论(问题) debate on a question; debate upon a question; debate upon on
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A new kind of pursuit problem is considered : the stochastic pursuit problem with incomplete information 摘要提出了一种新的具有不完全信息的随机追逃问题。
The second part studies optimal pure proportional navigation ( ppn ) , with time - dependent gain of navigation to maneuvering target based on proportional navigation theory . optimal gain of navigation is constant for ppn without maneuvering ; based on this , solution of time - dependent gain of navigation is given by iteration approach , and the time required for capture is given , the times of iteration is decided by comparing this time with the iteration step 对目标机动的追逃问题,考虑导航增益可为任意实数,且随时间和初始条件改变,这一思想是建立在目标非机动的纯比例导引制导规律,最佳导航增益为常数的基础之上,利用迭代的方法,给出了时变的导航增益的求解方法,并给出了实现捕获所需的时间,用此时间与迭代步长进行比较,判定迭代次数。
A kinematics model for 3d guidance problems is derived , a new kind of nonlinear variable structure adaptive guidance law is brought up by researching the variable structural strength item , and another fuzzy variable structure guidance law with self - adapt region is realized to enhance robustness of target acceleration estimate error of guidance law 本文建立了三维空间追逃问题的数学模型;通过对变结构控制中其变结构强度项的研究,提出一种新型变结构自适应制导律;并且考虑到对变结构强度项进行模糊化,实现一种论域自调整的模糊变结构制导律,以增强制导律对目标加速度估计误差的鲁棒性。