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fracture defects
相关语句
  断口缺陷
     Fracture Defects of W-Ni-Cu Alloy and Their Technological Influence Factor Analysis
     W-Ni-Cu合金的断口缺陷与工艺因素分析
短句来源
  “fracture defects”译为未确定词的双语例句
     Fracture defects were made on the zygomatic arch of 36 rabbits with the range of 1 mm,3 mm,5 mm and 7 mm.
     在兔一侧颧弓分别制备1,3,5,7mm骨折骨缺损。
短句来源
  相似匹配句对
     Fracture
     破裂
短句来源
     Conclusions: ①The majorreasons of fracture is casting defects.
     结论:①铸造缺陷是造成铸造RPD折断的主要原因。
短句来源
     Fracture Failure Analysis of Torsion Bar with Surface Defects
     含表面缺陷扭力轴的断裂失效分析
短句来源
     Zinc and Fracture
     锌与骨折
     Some defects of G.
     对G.
短句来源
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  fracture defects
Tensile strength and fracture defects expanded by subcritical crack growth of silicon nitride at high temperatures
      
An algorithm is developed for analysis of regime parameters of the shaping process, which exclude the possibility of fracture defects in articles during the stage of mechanical drawing by a punch.
      
Fracture Defects in Polymeric Blanks During Mechano-Pneumatic Shaping of Axisymmetric Articles
      


The toughness and ductility of cast NiCrMoCu HSLA steel are dec-reased due to the existence of fracture defect during fabrication. The fracture appearance, non-metallic inclusions and the segregation of alloy elements have been investigated by means of microprobe analysis and scanning electron microscope.The results indicate that the fracture defect of cast HSLA steel is the conchoidal fracture. Its macrofracture appearance consists of bright gray, non-metallic lustrous and coarse grain...

The toughness and ductility of cast NiCrMoCu HSLA steel are dec-reased due to the existence of fracture defect during fabrication. The fracture appearance, non-metallic inclusions and the segregation of alloy elements have been investigated by means of microprobe analysis and scanning electron microscope.The results indicate that the fracture defect of cast HSLA steel is the conchoidal fracture. Its macrofracture appearance consists of bright gray, non-metallic lustrous and coarse grain structure. Its microstruc-ture appearance consists of dimples. This is ductile intergranular fracture.The conchiodal fracture is caused by the I type MnS and the TiN along the austenite grain boundaries. They become fracture origins, reduce intergranular cohesion force and promote the propagation of intergranular cracks.The modification of MnS inclusions and elimination of the conchoidal fracture are carried out by addition of RE and SiCa into the steel.

在镍铬钼铜低合金高强度铸钢的生产中经常因出现异常断口而降低铸件的塑性和韧性。这种断口缺陷无法用热处理办法消除。作为一种冶金缺陷,探讨其产生的原因和消除办法是生产急待解决的问题。本文以扫描电镜为主要工具,对这种断口的性质、特征和产生的原因作了初步探讨。 实验的结果认为:铬镍钼铜低合金高强度铸钢中的异常断口为贝壳状断口。它的宏断形貌是淡灰色无金属光泽的碎石状粗晶组织,微观形貌是大小不等的韧窝,属于韧性晶界断裂。 产生贝壳状断口的原因是第二类硫化物和氮化钛的沿晶分布,它降低了晶间结合力并作为裂纹的核心,促使晶间断裂的产生和发展。 加入稀土和硅钙可以控制硫化物形态和消除贝壳状断口。

To discuss the operative techniques for treatment of delayed traumatic cerebrospinal fluid fistulae in order to improve the surgical result. Method:20 cases of traumatic cerebrospinal fluid rhinorrhea and one case of cerebrospinal fluid ot-orrhea were treated by spreading a large fascial patch graft over the cranial base. Result:All the cases were repaired successfully and there was no recurrence after being followed up for 1 to 20 years. Conclusion:Spreading a large fascial patch over the cranial base fracture...

To discuss the operative techniques for treatment of delayed traumatic cerebrospinal fluid fistulae in order to improve the surgical result. Method:20 cases of traumatic cerebrospinal fluid rhinorrhea and one case of cerebrospinal fluid ot-orrhea were treated by spreading a large fascial patch graft over the cranial base. Result:All the cases were repaired successfully and there was no recurrence after being followed up for 1 to 20 years. Conclusion:Spreading a large fascial patch over the cranial base fracture defect is a advisable method for treatment of the delayed traumatic cerebrospinal fluid leakage.

目的:报告20例脑脊液鼻漏和1例脑脊液耳漏的处理。方法:采用大移植片对迟发性脑脊液漏施行铺盖式的修补并取得良好效果。结果:21例病人均一次手术修补成功,经长期随访无一例病人复发。结论:我们采用的大片筋膜铺盖式修补法简便易行,效果满意。

Abstract The scab and the fracture defect in VTi abrasion resistance cast iron sheathing board are the Key factors that influence its quality. And now by improving the field producing technology against the factors above, we rejusted its chemical composition, and reduced the reject rate,on the base of giving our users' requirement of quality a satisfied answer.

钒钛抗磨铸铁衬板的夹砂、断裂缺陷是影响质量的关键因素.现通过有针对性的改进现场生产工艺.调整其化学成份,在满足用户质量要求的前提下,降低了废品率。

 
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