查询词典 quadratic

Is seen to be quadratic in an amplitude quantity, and we shall linearize by neglecting it.

项（？曾纾？？被看成是振幅的二次项，我们将忽略这一项而线性化。

Using the concept of Quadratic Stability and the approaches of predictive control, such as finite horizon and horizon receding, memoryless robust control and sufficient conditions of its existence and closed-loop stability are presented.

采用二次型稳定的概念，并借用预测控制中的时域有限及时域滚动的方法，给出了无记忆鲁棒控制律，并给出了其存在和使闭环系统渐近稳定的充分条件。

Twelve density treatments were designed, which were 225×10^4 (T1), 300×10^4 (T2), 375×10^4 (T3), 450×10^4 (T4), 525×10^4 (T5), 600×10^4 (T6), 675×10^4 (T7), 750×10^4 (T8), 825×10^4 (T9), 900×10^4 (T10), 975×10^4 (T11) and 1050×10^4 (T12) basic plants/hm^2. Grain dry matter growing process and grain filling rate could be described by Richards Model and Monodic Quadratic Equation, and the grain filling parameters could be calculated from Richards model fomula. Relation analysis, stepwise regression analysis and path analysis were made by DPS, SPSS software.

方法设计了225万(T1)、300万(T2)、375万(T3)、450万(T4)、525万(T5)、600万(T6)、675万(T7)、750万(T8)、825万(T9)、900万(T10)、975万(T11)、1050万(T12)基本苗／hm^2共12个密度处理，分别运用Richards模型、一元二次方程模拟了冬小麦籽粒干物质增长过程及籽粒灌浆速率随花后时间的变化情况，并对所建立的Richards模型进行推导得到基本的灌浆参数，通过SPSS、DPS软件对籽粒灌浆参数与千粒重进行相关、逐步回归及以及通径分析。

Result Richards Model and Monodic Quadratic Equation could properly describe grain dry matter growing process and the change process of grain filling rate with days after anthesis. There was big difference in average grain filling rate, maximum grain filling rate under different planting density. Average grain filling rate 1.26 mg/ and maximum grain filling rate 2.44 mg/ of T7 were the quickest, and the average grain filling rate 0.94 mg/ and maximum grain filling rate 1.99 mg/ of T12 were the slowest, and the maximum difference percentage of the average grain filling rate and maximum grain filling rate among different density were 33.98%, 22.61%. There was significant correlation between average grain filling rate, maximum grain filling rate, grain filling active duration, rapid increasing stage and thousand grain weight, and the correlation coefficients were 0.628*, 0.630*, 0.849**, 0.739**. Active grain filling duration contributed mostly to TGW.

结果不同密度处理间千粒重、单位面积穗数、穗粒数、单株穗数、单位面积籽粒产量均存在显著差异；不同密度处理冬小麦的籽粒灌浆均符合慢－快－慢的&S&型生长特性，用Richards模型能很好地模拟冬小麦籽粒增重过程，用一元二次抛物线方程能较好地模拟冬小麦灌浆速率随花后时间变化过程；不同密度处理间平均灌浆速率、最大灌浆速率有较大差异，最大差异率分别为33.98%、22.61%，T7的平均灌浆速率1.26mg/及最大灌浆速率2.44mg/均最大，T12的平均灌浆速率0.94mg/及最大灌浆速率1.99mg/均最小；平均灌浆速率、最大灌浆速率、灌浆活跃期、灌浆快增期与千粒重显著或极显著正相关，相关系数分别为0.628*、0.630*、0.849**、0.739**；通径分析表明，灌浆活跃期对千粒重的贡献最大。

The Er3＋up-converted luminescent process in oxyfluoride glass-ceramics is discussed and it is found that the non-quadratic relation between green up-converted luminescent intensity and pump power is caused by the strong cross-relaxation process of rare earth ions.

对稀土离子共掺杂系统，分析了Er3＋在铒镱共掺杂的氟氧化物玻璃陶瓷中的上转换发光过程，认为Er3＋绿色辐射的上转换发光强度与抽运激光功率的非平方关系是由于Er3＋和Yb3＋之间的强交叉弛豫过程引起的。

At last, the problem of the guaranteed cost control 2-D Roesser model with polytopic uncertainty is studied. The quadratic performance index and the definition of guaranteed cost controller are given.

本文还讨论了具有多胞型不确定的2-D Roesser模型的保性能控制，给出了该类系统的二次型性能指标，并定义了相应的保性能控制律。

Based on the quadratic separator, the design of a robust reliable tracking controller is investigated for a class of polytopic systems with actuator failures.

针对含执行机构故障的凸面体不确定系统，本文基于二次型分离算子给出了一种鲁棒可靠跟踪控制器的设计方法。

Based on a quadratic separator, a robust reliable filter design method for a class of systems with polytopic type uncertainty is presented against sensor failures.

摘要针对凸面体不确定系统并考虑传感器发生故障的情况，基于二次型分离算子进行了鲁棒可靠滤波器设计的研究。

On the basis of the single-factor experiment, the quaternionic quadratic rotational combination was used to optimize the extraction process of total relative flavone that came from fermentation fluid of citrus, and we had used the response surface methodology to study the best horizontal extent of solid-to-liquid ratio, extraction time, alcohol density, the microwave power which affected the rate of total flavone relative extraction.

在单因素试验的基础上，采用四元二次通用旋转组合试验优化柑橘皮渣发酵液总黄酮的提取工艺，用曲面响应法对影响总黄酮得率的料液比，提取时间，乙醇浓度，微波功率的最佳水平范围进行研究。

Three factors design with universal quadratic rotation combination was used to established the effect models of the application rates of N, P and K fertilizer and the bulbous growth quantity of the plant of Lycoris radiata.

采用3因素二次通用旋转组合设计方法，建立了施氮、磷、钾肥与石蒜鳞茎质量增长量之间的效应模型，经检验二次回归模型拟合较好。

Article 144 The Government of the Hong Kong Special Administrative Region shall maintain the policy previously practised in Hong Kong in respect of subventions for non-governmental organizations in fields such as education, medicine and health, culture, art, recreation, sports, social welfare and social

第一百四十四条香港特别行政区政府保持原在香港实行的对教育、医疗卫生、文化、艺术、康乐、体育、社会福利、社会工作等方面的民间团体机构的资助政策。原在香港各资助机构任职的人员均可根据原有制度继续受聘。

Small wonder, then, that the Chinese spend more in the shop than any other group of foreign visitors do .

这样的小惊喜，使中国顾客比任何国家的人消费得更多。