Application and assessment of multifunctional bio-impactor device;
多功能生物撞击机的应用与评估
After the development course and progress, existent shortcoming and crashworthy mechanism were introduced in and outside domestic’s macromolecule crashworthy-guardrail, the preparation of the new macromolecule crashworthy-guardrail has been studied and analyz.
本论文在介绍了国内外高分子防撞护栏的发展历程和发展现状、存在的缺点以及防撞机理之后,对新型高分子防撞护栏的研制进行了较为详细的研究和分析:先后通过挤出和注塑成型工艺对聚氯乙烯(PVC)复合材料、PVC/ABS复合材料以及ABS复合材料进行预备实验,通过比较确定汽车防撞护栏材料体系;利用Moldflow软件分析材料注塑成型所用模具的结构设计合理性,以保证在使用Moldflow软件模拟材料注塑成型时的精确性,并且自定义材料数据库;利用正交试验设计和挤出—注塑成型方法制备了纳米CaCO3/钛酸钾晶须(PTW)/丁腈橡胶(P83)/ABS复合材料,并以缺口冲击强度和弯曲弹性模量为主要指标,分别通过极差和方差分析得出了最佳配方;利用扫描电镜(SEM)对最终制得的防撞护栏材料的缺口冲击断面进行防撞机理探讨。
Investigation of the Safety for Solid Rocket Motor under Mechanical Impact;
固体火箭发动机机械撞击载荷作用下安全性研究
Based on thermo-viscoelasticity theory and dynamic finite element method,impact deformation of motor case and grain structure together with hot spot formation in grain were analyzed and calculated in combinition with crack friction hot spot micromodel of solid propellant under mechanical impact,and critical impact velocity which can cause high-temperature hot spot was determined.
以热粘弹理论和动力有限元法为基础,结合机械撞击载荷下固体推进剂裂纹摩擦热点细观模型,分析计算了发动机壳体和装药结构撞击变形及装药内部热点形成,确定了产生高温热点撞击临界速度。
collision mechanisms and exchange effects of (e,2e);
低能(e,2e)反应中的碰撞机制
The Superconducting Super Collider is being constructed in the UnitedStates.
本文介绍正在美国建造的、当今世界上最大的超导超级对撞机概况。
large electron positron storage ring
大型电子正电子对撞机
Research on the Analysis Methods of Ship Collision Based on Collision Mechanism
基于碰撞机理的船舶碰撞分析方法研究
Both planes were lost in the crash.
两架飞机都在撞机中报废了
A pin in the print head of a computer printer.
撞针计算机打印机的印刷头上的撞针
The car crashed into the train, and the driver was killed on the spot.
汽车撞到火车上，司机当场被撞死。
The driver cracked up his car.
司机把车子撞坏了。
a crashed car, plane
撞毁的汽车、 坠毁的飞机.
The sailing boat ran foul of a motor speedboat.
帆船撞到了机动快艇上。
airborne proximity indicator
飞机防撞雷达指示器
hood support bumper
发动机罩托架防撞器
The plane cracked up through a bad landing.
飞机因着陆不慎而撞毁。
Cubix Robots for Everyone Clash ''n Bash
机械人大战-疯狂冲撞
The computer triggers a "conflict alert."
计算机会发出“碰撞警报。”
persons who serve their own interests through trickery and swindling;
投机钻营、招摇撞骗的；
Development of Biological Impact Machine and the Study on the Mechanism of Impact Injury
生物撞击机的研制及撞击伤发生机制的研究
Research of Crashworthy Structure Design and Crash Simulation for Locomotive Carbody;
机车车体耐碰撞结构设计与碰撞仿真研究
Modeling and Simulation for the model of horizontal collision avoidance in TCAS
机载防撞系统水平防撞模型的建模与仿真
The plane hit as she was at a copying machine.
飞机撞击时她正在复印机旁。