difference n. 1.差异,差别。 2.不和,争论。 3.【数学】差,差额。 4.【逻辑学】特殊性。 There is no difference between them. 两者毫无差别。 the difference of jetsam from flotsam 弃货不同于浮货。 What difference can it make 不是一样吗? He is an artist with a difference. 他是别具风格的艺术家。 distinction without difference 无聊的区别。 make a difference 发生差别;使…有差别;(结果等)是重要的,有关系[影响] (One false step will make a great difference. 失之毫厘,谬以千里。 Don't let it make any difference. 没关系。 make a difference between A and B 使甲乙有别,对甲乙不一样)。 pay [meet] the difference 付差额金。 seek common ground while reserving differences 求同存异。 settle differences 调停。 split the difference 1. 折中,妥协。 2. 均分剩下的东西。 vt. 〔罕用语〕区别,使有差别。
Secondly , we present the principle of the algorithm , including its three key factors : the difference format , the stability condition and the absorbing boundary condition ( abc ) 第二章我们介绍了fdtd算法的基本原理以及算法的三大要素:差分格式、解的稳定性条件、吸收边界条件。
Based upon the forward simulation principle of ground penetrating radar , this article analyzes the realization method of the half grid spacing and the half time increment in difference format , at the same time analyzed the produce of the numerical frequency dispersion , then deduced the ideal frequency dispersion relationship and the super absorbing boundary condition 摘要本文从地质雷达正演原理著手,分析了差分格式中半空间步长与半时间步长的实现方法,同时通过分析数值频散的产生,进而推导出了理想频散关系和超吸收边界条件。
With this method , the feasibility of project can be decided preliminarily . 3 . one - dimensional hydrodynamic model is built , in which implicit difference format ( preismann discretization scheme ) and " three steps method " of one - dimensional unsteady flow model is used , hydraulic calculation is done for water diversion and flow strengthen in tidal networks and the method is enhanced in which the precision is improved greatly 建立一维水动力学模型,利用四点隐式差分格式( preismann格式)和一维河网非恒定流模型的三级解法,对感潮河网的引水增流工程进行了水力计算并对计算方法进行了改进,大大地提高了计算的精度。