查询词典 computation time

Chinese official claims to compared the GDP 1978 to break up as a result decuple, and the economic growth that economist of a few international believes China is in actually on most circumstance leaves the century between 90 time and this century is to be underestimated, because the growth of very much private company fails,complete computation goes in.

中国的官员声称结果比1978年的GDP翻了十倍，而一些国际经济学家相信中国的经济增长实际上在上世纪九十年代和本世纪之间多数情况下是被低估了，因为很多私人企业的增长没能完全计算进去。

During the reconstruction process of deterministic baseband signal, in orderto make sure the time-domain signal to be real and symmetrical, the initialpower spectrum is symmetrilized. In this case, it just needs simple organizationof short sequences to make long sequence, and can reach the purpose ofdecreasing computation and compressing data.

在确定性基带信号重构中，对初始功率谱采用特殊对称化处理，保证重构得到的时域信号具有实对称性，简单组合即可做到无频谱泄漏，从而达到了降低运算量、压缩下传数据的目的。

It identifies small parameters, moreover avoids online solving the Diophantine equation and inverse matrix. So the computation load of algorithm can be reduced greatly, and real-time property is advanced.

4提出一种基于灰色模型的多变量广义预测控制算法，该算法所需估计的参数少，而且多步情况下无需求解Diophantine方程，从而使计算量明显减少，极大的提高了实时性。

Initial boundary value problem of two dimensional unsteady diffusion equations is solved in this paper. By using time-dependent fundamental solution of two dimensional diffusion equations and the extension of double layer potential, we establish virtual boundary integral expression of diffusion equations. Then virtual boundary element method is used to implement the numerical computation.

本文在求解二维非定常扩散方程的初边值问题时，利用二维扩散方程与时间有关的基本解，基于双层位势的延拓，建立二维扩散方程的虚边界积分表达式，然后利用虚边界元法进行数值计算。

In the numericalstudy, three-dimensional elastodynamics equations and Morison equation are applied tosimulate the time histories of dynamic response of submarine pipelines suspended over flatbeds sucessfully. The three-dimensional interaction of pipeline and internal flow isnumerically simulated by applying the iterative computation to the fluid-structure interfacesand using the elastodynamic equation and the incompressible fluid N-S equation andcontinuity equation.

在数值研究方面，本文利用三维弹性动力学方程，结合莫里森方程，较好地模拟了规则波浪作用下近壁悬跨弹性海底管线动力响应过程，结合不可压缩流体N-S方程和连续方程，进行管线及其内部流体的三维流固耦合数值计算，基于数值计算结果探讨内流管线系统的动力特性和管内流体特征。

Within this context, four specific areas are addressed:(1) By means of finite integration technique, a new kind of the first order partial difference equation is derived from the original disperse transmission line equation of the uniform waveguide's. As it is the kind of one dimension Dirichlet's boundary problem, it is convenient for us to solve this equation from the leapfrog scheme. Because computation is carried out in one dimension, both high calculation efficiency and precision have been obtained in this method. Meanwhile, this method provide us a different selection to simulate the transient response of waveguide with non-simplical, for examples cylinder and elliptic waveguide, and avoid solving the second order equation, or using finite difference time domain to simulate a three dimension problem, sometimes the latter precision is not satisfied with the need, or low efficiency.

在这一研究内容下，主要研究四个方面的问题：(1)在完成金属波导传输线方程时域形式的基础之上，应用有限积分技术，把波导特征模式的色散传输线方程，化简为一组新的一阶偏微分方程组，该边值问题属一维Dirichlet边值问题，从而便于用蛙跳格式求解，由于是在一维中计算，该方法具有很高计算效率和精度，从而避免了以往为得到金属波导中特征模的时域响应特性，须要求解二阶方程，或用时域有限差分方法求解三维问题的方法，对于后者来说，计算有时是不准确的，或是很耗时的例如计算诸如圆波导、椭圆波导等其它复杂形状的波导。

The mathematical models of the delay of the GPS signal in the circumstance are put forward respectively. The computation of orbital arc of the two satellite constellations is based on two body problem and perturbations models. An algorithm based on the IRI model and thin layer model is used to simulate the ionospheric delay of the GPS signal. The error models of observation, multipath, relativity and antenna phase center bias are also researched. Under the consideration of the autocorrelation of the electronical measurements, the autoregressive model of time series is introduced into the noise models.

在信号仿真中，研究了利用二体运动和摄动法计算LEO卫星至GPS卫星星座的几何距离的问题；在信号的误差模型中，研究了电离层时延的IRI2001模型和单层投影模型；讨论了观测误差、多径效应、相对论效应和天线相位中心偏移的误差模型；结合电子测量噪声的具有自相关特性的经验，研究了观测误差的AR模型；结合实测数据分析，讨论了接收机钟差和卫星钟差的误差建模问题。

Its very low computation cost is about the same as that of 1-d ESPRIT, and it can get fair results at the same time.

它的计算量很小，和一维ESPRIT算法相当，同时也能够获得较高的估计精度。

At the time of final settlement following the end of the year, no recomputation and reconversion need be made in respect of income in a foreign currency for which tax has already been paid on a quarterly basis; only that portion of the foreign currency income of the entire year for which tax has not been paid shall, in respect of the computation of taxable income, be converted into Renminbi according to the exchange rate quotation on the last day of the tax year.

第十五条企业所得为外国货币的，在依照税法第十五条规定分季预缴所得税时，应当按照季度最后一日的外汇牌价折合成人民币计算应纳税所得额；年度终了后汇算清缴时，对已按季度预缴税款的外国货币所得，不再重新折合计算，只就全年未纳税的外国货币所得部分，按照年度最后一日的外汇牌价，折合成人民币计算应纳税所得额。

However, the time-consuming modulo exponentiation computation, which has always been the bottle-neck of RSA.

但该算法所采取的幂剩余盘算会消耗太多的时光，一直是制约其普遍应用的瓶颈。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。