system n. 1.體系,系統(tǒng);分類法;組織;設(shè)備,裝置。 2.方式;方法;作業(yè)方法。 3.制度;主義。 4.次序,規(guī)律。 5.世界,宇宙。 6.〔the system〕身體,全身;機(jī)體。 7.【天文學(xué)】系;說(shuō)。 8.【音樂(lè)】總譜表。 a ideological system 思想體系。 a system of philosophy 哲學(xué)體系。 a refrigerating system 致冷裝置。 a water regulating system 分水閘。 a system of management 一整套管理方法。 a clear cutting system 【林業(yè)】皆伐作業(yè)。 a system of rating 定額法。 the sales system 銷貨法。 What system do you go upon [on] 你用什么方法進(jìn)行呢? social systems 社會(huì)制度。 the feudal system 封建制度。 the great system 宇宙。 the Ptolemaic system 托勒密天動(dòng)說(shuō)。 the Copernican system 哥白尼地動(dòng)說(shuō)。 the solar system 太陽(yáng)系。 Too much tea is bad for the system. 喝茶過(guò)多有害身體。 have one's system out of order 身體不好。 adj. -less
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例句與用法
Cauchy problem for linearized system of two - dimensional isentropic flow with axisymmetrical initial data in gas dynamics 二維等熵流的線性化方程的具軸對(duì)稱初值的柯西問(wèn)題
In this method , the feedback linearization method is used to convert the nonlinear system into the linearized system , for which the tracking controller is designed , by this way , the nonlinear chaotic system can be forced to track variable reference input 在該方法中,首先采用反饋線性化方法將非線性系統(tǒng)轉(zhuǎn)化為線性系統(tǒng),再針對(duì)反饋線性化后的線性系統(tǒng)設(shè)計(jì)軌跡跟蹤控制器,實(shí)現(xiàn)被控對(duì)象對(duì)于連續(xù)變化給定信號(hào)的跟蹤控制。
Two illustrative examples , a duffing oscillator subject to a harmonic parametric control and a driven murali - lakshmanan - chua ( mlc ) circuit imposed with a weak harmonic control , are presented here to show that the random phase plays a decisive role for control function . the method for computing the top lyapunov exponent is based on khasminskii ' s formulation for linearized systems . then , the obtained results are further verified by the poincare map analysis on dynamical behavior of the system , such as stability , bifurcation and chaos 通過(guò)兩個(gè)實(shí)例,即一類參激激勵(lì)作用下的duffing系統(tǒng)和一類murali - lakshmanan - chua ( mlc )電路,考察隨機(jī)相位在非反饋混沌控制中的影響與作用,利用最大lyapunov指數(shù)和poincare截面分析法證實(shí)了隨機(jī)相位確實(shí)可以用來(lái)調(diào)節(jié)系統(tǒng)的混沌行為,即一個(gè)小的隨機(jī)相位的擾動(dòng)可能導(dǎo)致系統(tǒng)從有序轉(zhuǎn)變?yōu)闊o(wú)序,也可能使得系統(tǒng)從無(wú)序轉(zhuǎn)變?yōu)橛行颉?
Third , controlling chaos in the chaotic n - scroll chua ' s circuit is studied . the approach taken is to use feedback of a single state variable in a simple pd ( proportional and differential ) format . first , the unstable fixed points in the n - scroll chua ' s circuit are classified into two different types according to the characteristics of the eigenvalues of the linearized system matrix at the fixed points 第三,研究了多渦卷chua電路中不動(dòng)點(diǎn)處jacobian矩陣特征根的性質(zhì),并據(jù)此將不動(dòng)點(diǎn)分成兩類,應(yīng)用變量的比例微分反饋法分別對(duì)這兩類不動(dòng)點(diǎn)的可控性進(jìn)行了研究,研究發(fā)現(xiàn)該法只能實(shí)現(xiàn)第一類不動(dòng)點(diǎn)及其相應(yīng)子空間的混沌控制,而不能完成第二類不動(dòng)點(diǎn)的混沌控制,并給出了數(shù)值模擬結(jié)果,理論分析和數(shù)值模擬證實(shí)了該方法的有效性。
The main contributions of this dissertation are summarized as follows : for the exponential stability of neural networks , many existing results are related to local exponential stability . since the local exponential stability of a nonlinear system is equivalent to that of its linearized system , it can be easily obtained 目前許多文獻(xiàn)中有關(guān)指數(shù)穩(wěn)定性的研究都是針對(duì)局部指數(shù)穩(wěn)定性展開的,由于非線性系統(tǒng)的局部指數(shù)穩(wěn)定性可以通過(guò)其相應(yīng)的線性化系統(tǒng)得到,因此比較容易分析,而全局指數(shù)穩(wěn)定性則不然。