基本解释：波子弹弓
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Objective: To investigate a new method for constructing the three-dimen sional finite element model of nickel titanium memory alloy(NTMA) elasrtic arch for CAD.目的:探讨一种用于计算机辅助设计的镍钛记忆合金(NTMA)弹性弓有限元模型的建立方法。
A nonlinear finite element method was applied in the research of the collector head spring system of pantograph.将非线性有限元理论应用于机车受电弓弓头弹簧系统的研究。
Based on the relevant literature,this paper does a textual research on the emergence and development of the catapult sport in China,gives a brief account of the role of the catapult sport in history as well,introduces the methods to make catapults and play catapult,and expresses hopes for the future development of the catapult sport.运用文献资料法考证了弹弓运动在我国历史上的产生和发展的历程,并就弹弓运动在历史上的作用作了概述;对弹弓的制作与练习方法作了简要的介绍对弹弓运动的开展进行了展望。
The Optimization Design Research on Pantograph and Pantograph Spring System Based on Genetic Algorithms;基于遗传算法的受电弓及弓头弹簧系统优化设计研究
air risen spring lowered type pantogrpah空气提升弹簧降下式集电弓架
Replace spring tip inserts.更换弹簧顶端插头。
MALE HALF SPRING-LOCK COUPLER母头弹簧锁型联结器
The catapult projected stones into the air.弹弓把石头射向天空。
The Application of ANSYS in the Pantogrpah Designing有限元分析在集电弓弹簧设计中的应用
Hexagon head bolt and single coil spring lock washer assembliesGB/T9074.15-1988六角头螺栓和弹簧垫圈组合件
Enhance the Lifespan of Punch of the Leaf Spring;提高板弹簧冲孔冲头使用寿命的方法
He had a stone in his sling.并且把自己的弹弓装上了一块石头。
Then, with just his sling and these stones,然后，他仅带着他的弹弓和这些石头，
Catapult - I could use this to throw stones further弹弓─我可以用这个把石头丢的更远
Bend the bushing tabs so that they are contacting the leaf spring.弯曲衬套接头以便接头能与叶片弹簧接触。
A key for opening a latch or lock, especially one on an outside door.碰簧锁钥匙打开弹簧锁或锁头的钥匙，尤其指大门钥匙
" Hexagon head bolt, single coil spring lock washer and plain washer assemblies""GB/T9074.17-1988六角头螺栓,弹簧垫圈和平垫圈组合件"
Cross recessed pan head screw and single coil spring lock washer assembliesGB/T9074.3-1988十字槽盘头螺钉和弹簧垫圈组合件
Cross recessed small pan head screw and single coil spring lock washer assembliesGB/T9074.7-1988十字槽小盘头螺钉和弹簧垫圈组合件
Multifactor Analysis on Contact Bounce in Reed Systems of Electromagnetic Relay电磁继电器触簧系统触头弹跳的多因素分析
spring bow (drawing instruments)弹簧圆规（绘图仪）
