Now , there are many researches on the numbers of their small amplitude limit cycles . in chapter two , we give out an algorithm for calculating the liapunov values of polynomial lienard systems 在本章,我们提出了一个计算多项式li nard系统焦点量的算法,比之通常的算法计算多项式li nard系统的焦点量,在效率上有明显的提高。
The linear scale before and after log is an effective way to inspect the reality and accuracy of the log curves , such as downhole signal ' s amplitude limit or not and serious distortion , the variable density logging tool ' s signal linear amplification and working stability 测前、测后线性刻度对分析、判定变密度测井曲线的真实性与准确性体现在对井下波列的限幅与畸变程度、检测仪器的线性放大状态和稳定程度。
The system inherits the advantages of the combustion control systems of single and double cross amplitude limits , having overcome the disadvantages . it not only guarantees the system response performance of change in load , but also takes into account the economic performance of the system 该系统继承了单交叉限幅燃烧控制系统和双交叉限幅燃烧控制系统的优点,克服了不足,在保证系统变负荷响应性能的同时,还兼顾了系统的经济性能。
Based on the qualitative theoy of differential polynomial system , algorithm to calculate the focal values , the construction of small amplitude limit cycles , hirsch ' s monotone theory and the center manifold theorem etc , we apply mrealroot algorithm to many problems , such as to obtain the real solutions of polynomial systems , to confirm the number of limit cycles in differential system and to construct the limit cycles 结合平面微分多项式系统的定性理论,计算焦点量的算法,小扰动极限环的构造, hirsch的单调性理论和中心流形定理等, mrealroot算法在大量具体问题,包括实根分布、小扰动极限环个数以及高维系统极限环构造等方面都有广泛的应用
First , the working principles of the combustion control system of marine main boiler in present use and its disadvantages are discussed in the paper ; in the light of the structure and motion traits of marine main boiler , the combustion control systems of single and double cross amplitude limits are designed . at the same time , the schematic diagram of system and recovery curves of some relative parameters are given , the system working principles and its advantages and disadvantages are discussed . based on the combustion control system of dual - crisscross amplitude limit , by selecting the independent variable , the fixed offset is improved into variable offset , the combustion control system of variable offset dual - crisscross amplitude limit is designed 首先讨论了目前船用主锅炉燃烧控制系统的工作原理及存在的不足;针对船用主锅炉的结构及运行特点,设计了单交叉限幅燃烧控制系统和双交叉限幅燃烧控制系统,同时给出了系统原理图及有关参数的过渡过程曲线,讨论了系统工作原理及优缺点;在双交叉限幅燃烧控制系统的基础上,将固定偏置经过自变量的选取,改进成变偏置,设计了变偏置双交叉限幅燃烧控制系统,给出了系统原理图及有关参数的过渡过程曲线,同时也给出了空气压力和燃油流量正负偏置函数与变偏置折线函数的关系式。
amplitude: n. 1.广阔,广大。 2.丰富,充足。 3.(思想的) ...limit: n. 1.界限,界线;边界。 2.极限,限度;限制。 3 ...limit-amplitude flutter: 限幅颤振lower limit amplitude: 幅值下限stability limit amplitude: 稳定极限振幅amplitude: n. 1.广阔,广大。 2.丰富,充足。 3.(思想的)广度。 4.(天体出没时偏离正东或正西的)角度距离。 5.【物,电】振幅。 be at a limit: 在能接受的限度内limit: n. 1.界限,界线;边界。 2.极限,限度;限制。 3.〔pl.〕范围,范域。 4.限价;限额;赌注限额;猎物限额。 place limits on the number of men 限制人数。 set a limit to ... 对…加以限制。 the danger limit 危险线;极点。 reach the limit of one's patience 忍无可忍了。 limit value 【数学】极限值。 the age limit for enlistment 入伍的年龄限制。 There is a limit to everything. 凡事都有限度。 be the limit太过分,叫人无法容忍。 go beyond [over] the limit超过限度。 go the limit运动赛完全局[全场]。 go to any limit竭尽全力。 off limits 〔美国〕(军人)禁入地区 (Off limits to all unauthorized personnel. 闲人免进)。 on limits 〔美国〕(军人)活动地区。 reach the limit of one's resources 山穷水尽。 the inferior limit 1. 最迟的限期。 2. 最小的限额。 the limit 〔口语〕使人无法容忍的人[物],到了绝顶的事物。 the limit man 在赛跑时受最大让步的运动员。 the superior limit 1. 最早的限期。 2. 最大的限额。 That's the limit . 这算到头了,不能再容忍了。 to the (utmost) limit 到极点 (strain oneself to the limit竭尽全力)。 within limits 适当地,在一定范围之内。 within the city limits 在市内。 within the limits of 在…的范围之内。 without limit 无限制地,无限地。 vt. 1.限制,限定。 2.减少。 limit the number to fifty 把数目限制到五十。 limit the expenses 节省开支。 adj. -able limit to: 限于; 限制,限定limit…to: 把…限制在…范围内no limit: 没有限制; 无限额; 无限制; 无止境公司to the limit: 到顶点,到最大限度; 惊爆死亡线; 玩到极限with limit: 有难度限制amplitude to amplitude distortion: 幅度-幅度失真amplitude; wave amplitude: 波浪振幅a ual amplitude: 年较差absolute amplitude: 绝对振幅absorptive amplitude: 吸收振幅,吸收幅度acceleration amplitude: 加速度幅度; 加速幅度acoustic amplitude: 声幅值alloable amplitude: 容许振幅allowable amplitude: 容许振幅amplitude absorption: 振幅吸收amplitude acceleration: 振幅加速度amplitude accentuator: 振幅加强电路