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- The scarcity of resource has been being an economic foundational topic, as well as a hard constraint on Budgeting. 资源的稀缺性是经济学的基本命题，同时构成对预算的一种硬约束。
- UTP is an NP problem, It is required to satisfy the requirements of the five elements of the soft and hard constraints in a certain time and space. 摘要UTP问题是一个NP问题，要求在一定时间空间内满足五要素的软、硬约束条件。
- This paper formulates the active suspension control problem as a disturbance attenuation problem with time-domain hard constraints. 首先将汽车主动悬架的控制问题归结为有时域硬约束的鲁棒干扰抑制问题。
- Predictive control for hybrid systems (PC-HS) has an ability to cope with hard constraints on controls and states, which is the focas of reseach in academic circles. 摘要因混杂系统预测控制(PC-HS)具有在线处理控制量和状态量的约束等优点，而成为学术界研究的一个热点。
- But the MACE filter is sensitive to the distortion, thus we optimize the filter by removing the hard constraint and satisfying certain criterion, which is so-called unconstrained correlation filter. 然而我们知道最小平均相关能量滤波器的效能对于失真非常敏感，因此我们利用满足某些特定的条件来最佳化滤波器的效能、而不使用严格的限制。
- It is hard to sleep without a cooler in this room. 没有空气调节器，在这间屋里很难入睡。
- Optimal control for T-S fuzzy systems with time domain hard constraints 考虑时域硬约束的T-S模糊系统最优控制
- John felt it hard to rig out his family. 约翰感到难以为一家大小置备衣着。
- The hard core in the party make all the decisions. 这个党的核心成员决定一切。
- Hard copy is computer output on paper, printing or graphics. 硬拷贝是出现在纸上、印刷上或图表上的电脑输出。
- I scrubbed hard at the stain to see if I could get it off. 我使劲擦这个污迹，看能不能将它去掉。
- It's natural to slack2 off towards the end of a hard day's work. 一天紧张工作快结束的时候有些放松是自然的。
- He pushed hard on the brake pedal to avoid a collision. 他使劲踩下煞车踏板以避免撞车。
- One can not learn a language well unless one works hard. 学好一种语言非下苦功不可。
- Let's collect the sap before its consolidation into a hard mass. 让我们在树液坚固成团之前将之收集起来。
- He owes his opulence to work hard. 他的财富乃辛勤工作得来。
- She was trying hard to disgorge a fish bone. 她拚命想把鱼刺吐出来。
- The emery is a hard metallic substance. 金刚砂是非常坚硬的金属物质。
- Hard training will fit them to run long distances. 严格的训练将使他们能跑长距离。
- Seth really took it hard when his old dog died. 塞思的那条老狗死的时候，他确实怏怏不乐。
