crack是什么意思

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用法例句

Advance of research on crack arrest in metal die by using electromagnetic heating;

金属模具电磁热裂纹止裂研究的新进展

Using theory of electromagnetic heat effect, the possibility of crack arrest in highspeed steel under super-intention pulses electric current was studied.

利用电磁热效应原理，探讨了超强度脉冲电流对高速钢裂纹止裂的可能性结果表明，利用电磁热效应可在裂纹尖端形成焊口，使裂纹尖端的曲率半径增大，抑制了裂纹扩展同时，对裂纹尖端热影响区的组织进行了分析，讨论了裂纹尖端的组织变化对止裂效果的影响。

How to produce powerful pulse current is a key problem in the crack arrest by electromagnetic heat effect.

由于脉冲放电快速加热和冷却,在裂纹尖端处实现了冲击淬火,得到了超细化的隐晶马氏体和细粒碳化物等微观组织,提高了裂纹尖端处的硬度、强韧性和耐磨性,试验结果验证了该装置的有效性,本文的成果为采用电磁热效应对金属模具裂纹止裂提供了实验技术基础。

This work is the fundamental theory on crack arresting by application of electrothermal effect.

通过算例,描述了电流密度因子在裂尖附近的分布规律,为电磁热效应裂纹止裂方法的应用打下了理论基础。

The coupling of current, temperature and stress has been proposed in crack arresting by the electromagnetic heat effect at the moment when a pulse current is switched on.

讨论了电磁热裂纹止裂时脉冲放电瞬间的电流、温度和热应力的耦合关系。

Anaylisis of Microstructure and Residual Stress Using Electromagnetic Heating Effect

金属构件电磁热裂纹止裂微观组织及残余应力研究

Research on Fracture and Crack Arrest in Ship Structures

裂纹损伤舰船结构的断裂及止裂研究

Resarch on crack preventing on-line in 40GrNiMo specimen with edge crack and its microstructure analysis

40GrNiMo试件单边裂纹在线止裂及组织分析

Formation Mechanism and Prevention of Center and Triangle-Zone Cracks in Continuous Cast Slabs

板坯中心裂纹和三角区裂纹的成因与防止

All existing web cracks were arrested by drilling 19 mm holes at the ends of the cracks.

所有已存在的腹板裂纹都在裂纹端部钻19mm的孔止裂。

fracture mechanics can be used to determine the conditions in which a rapidly propagating crack can be arrested

断裂力学可用来确定制止裂纹快速扩展的条件。

Experimental Research on Crack arrest Using Electromegtic Heating in a Side-crack Under the Action of Mechanical Loading

机械载荷作用下单边裂纹电热止裂的实验研究

Research on the Spatial Crack Arrest in Metal Component by Using Electromagnetic Heating;

金属构件中空间裂纹电磁热止裂技术的研究

Crack Arrest of Half-embedding Cracks of In-service 45 Steel Component by Electromagnetic Heating

在役45钢构件半埋藏裂纹的电磁热止裂

Oblique crack arrest of super hardness aluminium alloy specimens by pulse current discharge

超硬铝合金试件中斜裂纹脉冲放电止裂

Hardening Crack Analysis and Prevention Measurement for 45 SteelWobbling Arm Axis

45钢摆臂轴淬火裂纹分析及防止措施

Machinery rubs the mechanism of paring the crackle and emerge and prevension measure;

机械磨削裂纹产生的机理与防止措施

Reasons of Cracks During Grinding and Preventive Measures

齿轮磨削裂纹的产生原因及防止措施

Examine block for cracks or fractures.

测试泵体裂纹或破裂。

The crack eventually caused the chord to fracture.

裂纹最终致使弦杆断裂。

Anaylisis of Crack Arrest and Mechaniclal Properity with Half-Embedding Crack Using Electromagnetic Heating Effect

带有半埋藏裂纹金属构件电磁热止裂及力学性能分析

Initally 24 mm holes were drilled at the crack tips to arrest propagation.

最初，在裂纹尖端钻24mm的孔以阻止其扩展。

Prevention and Avoidance of Grinding Cracks in Gears Made of Alloy-Steel

防止和消除合金钢齿轮磨削裂纹的探讨