查询词典 variations equation

Through establishing the functional of the source pulse which is based on the concept of "usable energy" in the received pulse and then extremizing the functional by means of the calculus of variations, the mathematical models of the optimized source pulse waveforms are shown to be associated with the eigenfunctions of a homogeneous Fredholm linear integral equation of the second kind. An efficient algorithm is developed for numerically solving the integral equation models.

论文研究了基于延迟反射脉冲序列无源标签的UWB RFID系统的基本工作原理并进行了详细的信号描述和分析，通过建立基于接收脉冲"有效能量"概念的源脉冲波形函数的泛函和使用变分计算泛函极值，得到了相关于第二类齐次Fredholm线性积分方程特征函数的源脉冲波形最优解数学公式模型，并开发了一套有效的数值求解算法。

Arban Variations on Opera Vois-tu la neige qui brille?: Andante quais Allegretto, Variations 1 and 2, Lento, Allegro, any edition.

變奏曲 -根據歌劇《美麗的雪景》，需演奏：近似小快板的行板、變奏 I 和 II、尾聲和快板，可選任何版本。

The several sets of arias with variations are, surprisingly, much, more developed than the organ chorale variations.

阿里亚斯与变异数集的，奇怪的是，许多较发达的比机关的乐章变化。

In a series of other articles (1940, 1941, 1942, 1944, 1946, 1958), which come together in his Revision of Demand Theory (1956), Hicks resurrected Marshall's concept of consumer's surplus and introduced and expanded upon the idea of "compensating variations" and "equivalent variations" as measures of welfare change.

随后发表的一系列于此相关的文章都收录在《需求理论的修正》一书中

At cypsela size variation, the cypsela length variations of Ajania, Senecio and Anaphalis are smaller, the cypsela length variations of Artemisia, Aster and Ligularia are bigger; the cypsela width variation of Anaphalis is smaller, and others have little difference.

在连萼瘦果大小变异方面，亚菊属、千里光属和香青属连萼瘦果长度的变异系数较小，蒿属、紫菀属和橐吾属的变异系数较大；香青属连萼瘦果宽度的变异系数较小，其他属的变异系数相差不大。

Discussion (1) Mean temperature variations in China in the last millennium synchronize well with the classical solar minimum, such as the Darton minimum, the Maunder minimum, the Sporer minimum and the Oort minimum, suggesting a strong linkage between temperature variations and solar variability in the last millennium.

综合讨论(1)"红原-金川"平均温度变化趋势显示，近千年中国平均温度变化与经典的太阳活动极小期，如Darton极小、Maunder极小、Sporer极小、Oort极小，等等，表现一致。

The abnormal forms and the variations of other characters were observed or examined, such as plant short, leaf variations(contain leaf etiolation, leaf notch, leaf roll, and main leaf vein partial nondisjunction, etc.), growing period, cold hardiness, scourge-like caudex differentiation, corm weight increase, and so on.

这些可观察或可检测的变异有形态异常，主要表现为植株矮小及叶片畸形（包括叶片黄化、缺刻、叶卷曲及主叶脉粘连不分离等）；还有其它的性状变化，如生长期、根系、鞭状茎分化、耐寒性，球茎增重和产量等。

It is generally agreed that a well-defined and sufficiently constrained recognition problem (small intraclass variations and large interclass variations) will lead to a compact pattern representation and a simple decision making strategy.

这是普遍公认的一个明确界定和约束足以识别问题(小组内变异和大组内变异)导致一个紧凑模式的代表性和一个简单的决策策略。

Various hypotheses about isostasy take into account density, thickness, and pressure variations to explain topographic variations among lithospheric plates.

有关地壳均衡的多种假说考虑到密度、厚度和并用压力变化来解释岩石圈板块间的地形变化。

The southern branch of ACC bypassing the north part of the Kerguelen Plateau behaves like an annual variation while the southern one displays a semi-annual variation. The variations of both branches are consistent with the variations of the wind stress in both regions.

模拟结果显示，凯尔盖朗海台以北的ACC的变化以年周期为主，海台以南的变化以半年周期为主，其时间变化规律与这里风应力的变化规律是一致的。

Objective:To explore the feasibility of laparoscopy in diagnosing and treating of abdominal diseases.

目的：探讨腹腔镜用以诊断腹部外科疾病及选择治疗方案的可行性。

The lifetime of nylon 1010 and nylon 1010/POSS composites decreased with increasing temperature.

热重-红外联用分析表明尼龙1010在氮气气氛下的降解产物主要为小分子的低聚物，POSS并不改变尼龙1010降解产物的组成。