preformed

To satisfy the requirements of fast producing,low cost manufacture and large thickness preforming in the field of non-resin winding cylinder composite,the equation of retracing cosine curve was deduced based on the section principle.

最后基于对余弦折回曲线的分析,利用数值模拟证实余弦折回曲线在干纱缠绕圆柱壳体预成型中有利于高速加工;在缠绕厚度相对不大且需要高速缠绕加工情况下,可采用余弦曲线作为端部区段的折回曲线。

On the base of the research of the non-resin winding cylinder preforming technique,particular arithmetic used to develop the computer software was indicated.

本文述叙了三维图形标准OpenGL模拟系统的基本原理,结合干纱缠绕圆柱壳体预成型技术的研究,论述了开发此计算机软件的具体算法。

In this dissertation, the technology of cylinder non-resin winding preforming was put forward and studied comprehensively and systematically.

本文提出了适于快捷生产、低成本加工、厚壁圆柱壳体制件成型的“干纱缠绕圆柱壳体预成型技术”，并对这一工艺进行了较为全面和系统的分析研究。

The structural dimension of piston tail forging part and the key technology of die forging were analyzed in detail,then a three-step die forging process was determined which included blocker forging,finish forging and trimming.

详细分析活塞尾锻件结构尺寸和模锻成型的关键技术,制定了三步模锻成型工艺:预锻成型、终锻成型和切边,设计了模具结构。

The technological requirements for preparing tackified preforms by using LCM were painted out.

总结了20世纪90年代以来关于复合材料液体模塑成型(LCM)技术中纤维预成型体制备技术的相关文献报道,指出LCM用纤维预成型体应满足的工艺性要求,且对当前国内外纤维预成型体的成型方法及其制备技术中应用的几种增粘剂进行了分析和概述,并对纤维预成型体制备技术的发展方向进行了展望。

Microstructure of 3D six-directional braided preforms;

三维六向编织预成型件中纱线的交织结构

Study on Permeability of Fiber Perform in LCM;

LCM工艺中纤维预成型体渗透率的研究

Development of High Performance Tackifiers and Tackifacation/Preforming Technologies for Resin Transfer Molding;

液态成型用高性能定型剂研制与预成型技术研究

prestress forming

预模压加热蠕变成型

Industrial pre-crimped wire screens (square opening series)

GB/T13307-1991预弯成型金属丝编织方孔网

It was made of a large precast concrete panel.

这是由一大型混凝土预制板制成的。

Results: New prefabricated post-and-core could preduce a close conjection with tooth.

结果：新型预成桩核能与牙体紧密结合。

Study on Springback Prediction of High Strength Strip Steel in Rollforming;

高强度带钢辊弯成型的回弹预测研究

The Characteristics,Causes and Preventive Measures of Anti-social Personality;

反社会型人格的特点、成因与预防对策

Research and Analysis of Oil Distribution Model;

成品油终端配送预测模型研究与应用

Research on Prediction of Final Rolled Steel Output Based on Gompertz Model;

基于Gompertz模型的成品钢材产量预测研究

On Predicting the Growth Crisis of SMEs Based on Logit Model;

基于Logit模型的中小企业成长危机预警

On the Soft Budget Constraint of Military Expenditure: Causality Analysis and Model Expound;

军费软预算约束成因分析及模型解析

GDP Forecasting Model Based on Neural Networks Ensemble;

基于神经网络集成的GDP预测模型

Research on Forecast Model of Middle-term and Long-term Cost of Goods Manufactured Per Unit;

单位产品成本中长期预测模型的研究

Gold Exploration Model and Mineralization Predication in Zhao-Ping Fault Zone

招平断裂带金矿勘查模型与成矿预测

Study on Integration of GIS and Water Quality Evaluation and Prediction Model

GIS与水质评价和预测模型集成研究

Intelligent integrated model for forewarning evaluation of watershed water security

流域水安全预警评价的智能集成模型

An integrated prediction model for burn-through-point in lead-zinc sintering process

铅锌烧结过程烧穿点的集成预测模型