hedging portfolio

用法例句

The combination washes the mold CAD system the data the procedure design and research that support;

组合冲模CAD系统数据维护的程序设计与研究

The combination washes the mold CAD system diagram to set up full-automatic to realize;

组合冲模CAD系统图面布局的全自动实现

The mould database management and fuzzy inquiry in the CAD system of assembling die;

组合冲模CAD系统中的模具库管理及模糊查询

According to the applications of several typical assembling dies, a superficial analysis of the economic effectiveness is given, and a conclusion has been derived that with the application of assembling dies in the aircraft manufactuting processes the trail manufacture and develop period can be much shorter, th.

本文以J8机和航空标准件工装的统计数据为基础，对组合冲模可替代的项目进行了筛选，根据一些典型零件的组合冲模应用情况对推广组冲技术的经济效益进行了粗略的分析，认为在飞机机体制造中应用组合冲模能够有效地缩短新机研制和试制周期，降低成本，并对增强航空企业在国际市场中的竞争能力有重要意义。

This paper introduces the basic principle of ionospheric virtual height measurement based on ionospheric echo′s phase and the basic measurement method of combined pulse echo′s phase,and does a series of experiments of ionospheric virtual height measurement.

指出了通过测量电离层反射回波的相位随频率的变化可以提高电离层虚高测量精度,分析了利用电离层回波相位进行虚高测量的基本原理以及利用电离层垂直探测中组合脉冲回波进行相位测量的实现方法,对电离层虚高进行了一系列测量实验。

The simulation results show that the power spectrum density of the combined pulses,which is obtained through two coefficient combination ways,approaches to the FCC UWB indoor spectral mask.

仿真结果表明,两种系数选择方法所得组合脉冲的功率谱密度均能较好地接近FCC室内频谱规范,且基于最小均方误差准则的系数选择能更好地逼近频谱规范,实现频谱资源的充分利用。

In the CAD system of combination die,it is the key to find the needed mould diagram in the retrieval design method that when the mould assembly diagram has been searched,the presswork of correspondence diagram is available at the same time.

在组合冲模CAD系统中,在检索到模具装配图时,能够同时观察到相对应的冲压件图,是检索式设计方法中准确找到所需模具图的关键。

Each combination dies, assorted with the press machine, can complete all punching procedures of window frame and window sash of one specification.

与该设备配套的每个组合冲模，可完成一种规格的窗扇或窗框的全部冲压工序。

Integrated Performance Numerical Simulation of Turbo-ramjet;

涡轮冲压组合发动机一体化数值模拟

The Automatic Realization in Process Analysis of Assembling Die Blanking

组合模具冲裁件工艺分析的自动实现

The Research on the Active Portfolio Decision Model with Implicit Transaction Costs

考虑冲击成本的积极投资组合决策模型研究

Application of combined dies in automobile production

冲压单元组合模具在汽车生产中的应用

Research on Cushioning Property and Computer Simulation of Combined Molded Pulp Structure;

组合式纸浆模塑结构的缓冲性能及其计算机模拟

Composition design method of product structure of pressing mold based on polychromatic sets

基于多色集合的冲压模产品结构的组合设计方法

Feedback Model for Serial Manufacture System with Finite、Infinite or Combined Buffers

缓冲区有限、无限或组合型串行生产系统的反馈模型

Analysis of mode transition with thrust smoothing of small turbine/ramjet combined cycle engine

基于推力连续准则的小型涡轮冲压组合发动机模态转换过程分析

A Model for Performance Analysis of a Turbofan-Ramjet Combined Engine

涡扇-冲压组合发动机性能计算模型及性能分析研究

Emission of High-Order Harmonics and Generation of Isolated Attosecond Pulses under the Interation of Model Atoms with Laser Pulses

模型原子在组合激光脉冲作用下的高次谐波发射及孤立阿秒脉冲的生成

hybrid digital analog pulse time

数字模拟混合脉冲时间

The development of multi-combination resisting impact protection material with the capacity of buffer shock

缓冲减振多元组合抗冲击防护材料的开发

A UWB Ranging Pulse Design with Optimizing Combination of Three Factor of Differential Gaussian Pulse

高斯脉冲三因子组合的UWB测距脉冲设计

Coefficient design for combination pulse based on the Gaussian pulse derivatives

基于高斯脉冲导函数的组合脉冲系数设计

The structure and composition of work area of blanking lower die were discussed in this paper.

讨论了冲裁凹模工作部分的结构组成。

On Cultural Conflicts during the Transition of University s Organizational Management Mode;

大学组织管理模式变迁中的文化冲突

The Application of Steel-construction Hard Alloy to the Punching Die for Stamping the Core Laminations of Motors

钢结硬质合金在电机冲片冲模中的应用