查询词典 numerical signal

Computing the trajectory of a spacecraft requires the accurate numerical solution of a system of ordinary differential equations .

的总体目标数值分析领域中的设计与分析技术，以提供准确的近似，但很难解决的问题，不同的是所提出以下。

Taking into the feature of computer computing method, using Stress solution of elasticity theory and according to different method of solving of system of second order ordinary differential equations , this article provides two numerical value computing method as for the stress and deformation of the turbine impeller which is within the scope of elasticity .

从计算机计算的特点出发，采用应力法，根据二阶常微分方程组的不同解法，给出了透平机叶轮在弹性范围内应力和变形计算的两种数值计算方法。

In the method of numerical analysis, the spatial part of equation system in strong conservation form is first discretized by conventional central finite-difference approximation and then the system of partial differential equations becomes a system of ordinary difference equations.

本文所建数值方法的基本空间离散格式是中心差分，并用源于Jameson的标量耗散模型抑制数值波动；采用经典四阶龙格—库塔法积分经过空间离散后得到的常微分方程组当残差足够小时的解为稳态解。

This dissertation first introduces the hardware connection between the RS - 232 connection and the electric cable line in the numerical control workshop network communication, then it analyzes and compares syzygy type network topology and star topology based on serial port expansion card.

本文首先介绍了数控车间组网通讯中RS232C接口与电缆线的硬件连接，然后对点对点式网络拓扑结构和基于串口扩展卡的星型拓扑结构进行分析与比较，从而得出数控车间串行通信连接系统的最佳方案。

With the numerical calculation,the two phase media equoconcentration distribution map and t...

研究结果表明，数值计算得到的各种图完全符合已知的旋流器流场分布规律。

The method of computational fluid dynamics was adopted for numerical simulation of tailrace surge tank s of pumped storage power stations.

运用计算流体动力学方法对某抽水蓄能电站尾水调压室进行了数值模拟。

In tailrace tunnels of Baise Hydropower Station, a transient mixed free-surface-pressure flow may occur, which has a complex effect on the stability and transient of the power plant, so it is needed to build a reasonable and feasible mixed free-surface-pressure flow numerical model.

百色水电站运行时，尾水隧洞中有可能出现明满交替流动而使尾水系统对电站运行的稳定性和过渡过程都带来复杂的影响，因此建立合理可行的明满交替流动数值模型是完全必要的。

Tan - calculates and returns the tangent of a numerical value representing an angle in radians.

Tan –计算并回覆代表角度弧度的正切数值。

The numerical results show that the secondary flow is enhanced in the cross section vertical to the mainstream for the revised burner, the gas tangential velocity component increases, and the rotational flow is intensified.

结果表明：改进后的燃烧器明显地增加了垂直于主流方向截面上的二次流，气体的切向分速度增大，旋流程度增强，能够有效地改善煤气和空气的混合效果。

The numerical simulation result of axial velocity and tangential velocity are very close to the experimental result.

其中，轴向和切向速度的模拟结果和实际结果非常接近；径向速度的模拟将有助于旋流器结构及性能的分析。

Looking to bounce back from defeat against Cesena last weekend, the Calabrian boss will be sticking to his tried and tested 4-3-3, with Lopez and Sedivic joined up front in Giampaolo's absence by either Nanni or Plasmati.

鉴于上周末对切塞纳的比赛中反败为胜，这支南方球队将会更坚持其一贯而有效的4-3-3阵型，洛佩斯和塞德维奇将取代受伤缺席的詹保罗，和纳尼或者帕斯马蒂中的一个搭档锋线。

Meanwhile, their exposure to the more freewheeling ways of the West broadened dramatically.

另外，西方较自由的生活方式对年轻人的影响增大。