preform是什么意思

网络释义

用法例句

Methodology research on 3-D braided preform with changed-sections;

变截面三维编织预制件的增减纱机制

Measurement for thickness of carbon fiber three-dimensional braided composite material preforms;

碳纤维三维编织复合材料预制件厚度的测量

Research on pore-forming materials of preform technology;

PRMMC_S预制件制备中造孔剂的应用研究

T/R module is a key component in phased array radars and requires extremely high performance forpackaging housing materials with light weight, good thermal conductivity, and a low coefficient of thermalexpansion.

本文介绍了小批量T/R组件封装外壳研制中的关键技术,如近净成型预制件技术、真空气压浸渗技术和机械加工技术。

It has important relation between composite materials mechanics and perform thickness and irregularity index, but so far the perform thickness is only measured by hand.

然而，编织物复合后的力学性能与编织物预制件的厚度及其不匀有着重要的关系，但是目前预制件的厚度还只能依靠手工检测。

The microstructure of the special-shaped 3D braided preforms configurated by reducing-yarn technique is studied by means of experiments and theoretical analysis, in order to set up the braiding technology more strictly.

对通过减纱工艺形成的变截面三维编织预制件的细观结构进行了研究,并采用拓扑方法进行理论分析,得到了减纱后通过减纱截面的纱线运动走向和变化规律,从而为更精确的制定异型三维编织预制件的编织工艺打下了基础。

A study of some sections preforms for compostites produced by weav- ing method has been expounded in the preceding article.

本文仅就用机织法生产复合材料板材预制件的可行性、科类、结构特点及有关的结构设计问题，结合上机织造的实验，进行研究。

But the volume fraction of particles in composite fabricated by prefabricate method was finite.

对陶瓷颗粒进行预处理之后,在非真空感应炉中,利用预制件法、无旋涡机械搅拌法和半固态机械搅拌法制备了颗粒增强铝基复合材料。

, which frequently occur on the prefabricated components of port engineering construction, the prevention and control measures are put forwar

通过对水运工程预制构件经常出现的砂线砂斑、蜂窝孔洞等表观缺陷质量通病产生原因的分析 ,提出防治措

Combined with modification work of Shengli Bridge the quality control measures of prefabricated components are elaborated.

结合胜利桥改造工程的实际 ,阐述了该桥所用预制构件的质量控制措施。

Analysis on transport,storage and loading quality control of precast members;

预制构件堆放和运输及吊装质量分析

Repair of defects on the appearance quality of precast members;

预制构件外观质量缺陷与修复

Something prefabricated, especially a building or section of a building.

预制件预制的东西，尤指建筑或建筑的一部分

Optimization CAD of the preform structure of 3D woven composites

三维机织复合材料预制件结构优选CAD

Study on 3-D weft knitting composite preform of ramie fiber

苎麻三维结构纬编针织复合材料预制件的研制

modular prefabricated wooden bridge (system)

预制标准件木桥(组装法)

prefabrication of concrete element

混凝土构件预制工艺

A Study on Institution of Social Crisis Detection;

预见性政府治理与社会突发事件的预警机制

Technical specification for prefabricated concrete products

预制混凝土构件模板技术规程

Whet her electroplating quality is good or bad depends on pre-treatment.

铝制件电镀质量的好坏，预处理是关键。

prefabricated kitchens, houses, schools, etc

由预制构件组装的厨房、房屋、 校舍等.

inverted u shaped precast concrete unit

倒u型预制钢筋混凝土部件

Early Warning Mechanism of the Urban Emergency:the Connotation and System;

城市突发事件预警机制:内涵及体系

On Establishment and Improvement of Group Events Crime Prevention Mechanism;

论群体性事件预防机制的建立与完善

Using FoxPro to prepare software for budgetary estimate and budget making of railway engineering;

利用FoxPro编制铁路工程概预算软件

College Incident Causes and Early Warning Mechanism Research

大学生突发事件成因与预警机制研究

The Research on Spare Parts Consumption Forecasting of Thermal Control System in the Electric Power Plant

电厂热工控制系统备件消耗预测研究

Study on the Interest Coordinative Mechanism of Preventing Group Incidents

预防群体性事件的利益协调机制研究

Fabrication of Zigzag Defect Free Ferroelectric Liquid Crystal Devices with Small Pretilt Angle

小预倾角无缺陷铁电液晶器件的制备

Design on Experimental Apparatus for Prediction of Surface Roughness

工件表面粗糙度预测实验系统的研制