In this paper , by using reductive perturbation technique , we studied the solitary waves in nonlinear vibrating string , plasma , blood vessel and nonliear transimission lines respectively 本论文运用约化摄动法分别研究了非线性弦振动、等离子体物理、血液流动和非线性电路传输线等领域中的孤波现象。
The best reductive effectiveness under different gas channel width , marangoni number and aspect ratio have been represented . it should be emphasized that the mc reduction of 99 % can be realized in some situations 流道宽度对熔体热毛细对流的抑制有很大的影响,流道越窄,熔体热毛细对流的抑制效果也越好。
The results show that the metal is mainly derived from the mixture of mantle and crust , the magmatic sulfur , which assimilate silicon in the sea with a small amount of the sulfur made by biology in reductive condition 分析结果显示,成矿物质来源于地壳和地幔的混合;硫来源主要为同化了海水硫酸盐的岩浆硫,并有少量生物还原硫参与。
Adopting the " expand in frequency domain " theory , not the linear prediction in phase space reconstruction algorithms , the reductive computing of boiler tube leak signal is done and validated by experiments 舍弃了传统相空间重构的过程中的线性预测模式,采用“频域拓展”的方法,对炉管泄漏声信号进行了还原计算,并通过实验进行了验证。
From the reductions of decision table defined by history fault data , a series of nodes network rule sets , with suitable belief degree under different reductive levels , is developed by calculating the rough subjection degree of every rule 该方法从历史故障数据所形成决策表的约简出发,通过计算规则的粗糙隶属度,形成不同简化层次上符合置信度要求的节点网络规则集。