心部组织中的带状铁素体是引起断裂的主要原因。
The fracture mainly is due to the existing of zonal ferrite in the microstructure of matrix.
感染性心内膜炎是继发性瓣膜腱索断裂的主要原因。
The infections endocarditis was a major cause of the secondary ruptures group. The repair operat…
结果表明，盘条内部存在缺陷是造成断裂的主要原因。
Results indicate that the intrinsic defects in the rod stock is the main cause to the failure.
结果表明：热加工温度过高是传动轴断裂的主要原因。
The results show that the primary cause of fracture of the driving-shaft is that the hot working temperature has been too high.
使用染发剂是另一种干发脆，这是更容易断裂的主要原因。
Using hair dye is another major cause of dry and brittle hair, which is more prone to breakage.
试验结果表明，造成轴销断裂的主要原因是热处理工艺控制不当。
The results showed that fracture of axle pin was caused by improper heat treatment.
结果表明，钢中夹杂物多和氧含量偏高是导致压扁断裂的主要原因。
The result shows that the unqualified cause of cold bending strip steel is high oxygen content, high inclusion content, etc.
他认为，可能冰川底下的海水流动是造成此次冰山断裂的主要原因之一。
The flow of sea water below the glaciers is one of the main causes of ice calvings off Greenland.
分析结果表明，在机架柱上所进行的点焊是导致机架柱断裂的主要原因。
It was shown that spot - welding on the surface of the press frame pillar mainly resulted in the fracture.
结果表明，焊接时输入热量过高产生的原始裂纹是球阀断裂的主要原因。
The results show that the original crack is brought by high welding heat, which can cause the broken of ball valve.
结果表明，钢丝热浸镀时走速过快和镀层不均匀是导致扭转脆性断裂的主要原因。
And quick wire movement during hot-dipping and inhomogeneous coating was identified as the main cause.
结果表明，大尺寸的非金属夹杂和背帽外缘的点焊是引起泵轴过早断裂的主要原因。
The fracture of the pump shaft is mainly caused by large size non metallic inclusions and point welding between the lock nut and the pump shaft.
结果表明，所用材料的显微组织缺陷和耐热性能差是导致芯轴发生早期断裂的主要原因。
The result showed that the defects of the microstructure in the core axes and the poor heatproof of the material were the main reasons for the core axes′s earlier ruptured.
结果表明，材料中存在的带状组织及呈带状分布的夹杂是导致风机主轴断裂的主要原因。
It was demonstrated that the strip-shaped inclusion makes the band structure formed in strip. This is the main reason which caused the early broken of the shaft.
分析了高应力条件下弹簧疲劳断裂的主要原因以及用稀土控制弹簧钢夹杂物形态的局限性。
The main reasons of fatigue broken of spring in the condition of higher stress and the limitation of using mish metal to control the form of inclusion in spring steel have been analysed.
结果表明，热处理不当导致材料力学性能偏低偏脆是齿轮轴发生快速脆性断裂的主要原因。
It is inferred that low strength and bad ductility which is induced by abnormal heat treatment are the cause of brittle fracture happening for the gear shaft.
结果表明，断裂呈现典型的疲劳断裂特征，材料表面缺陷是引起该弹簧疲劳断裂的主要原因。
The results showed that the fracture was of typical fatigue fracture, and surface defects were the main factor resulting in the failure of the air valve spring.
结果表明，螺栓金相组织不正常，力学性能达不到8.8级的要求是导致了螺栓断裂的主要原因。
The results show that: the metallic structures of bolt were abnormal, mechanical properties can't meet the requirement of grade 8.8 were the main reasons for fracture bolt.
在综合分析断裂现象、化学成分和实际工作情况后，认为轴肩定位不完全是导致销轴断裂的主要原因。
The result shows that it is the localization incompletely of shaft shoulder which causes the fracture of pin.
结果表明，产生断裂的主要原因是材料内部成分偏析及未按要求对材料进行调质处理导致材料的强度较低。
The results show that the main causes of fracture is composition segregation and low strength resut from no quenching and tempering treatment.
结果表明，弹簧断裂的主要原因为珠光体石墨化导致强度不足，选材不当是发生珠光体石墨化的主要原因。
The results show that the fracture failure is the insufficient strength caused by pearlite graphitization. Material selection inappropriate is the main reason of pearlite graphitization.
采用扫描电镜进行断口分析，结果表明，零件内弯处外表面上的冲压伤痕是导致其早期疲劳断裂的主要原因。
The fracture surface was inspected by SEM. The results showed that the stamping damage on the surface around the inside bend was the main factor to cause the early fracture.
在长输管道生产中，由于焊管管端几何形状误差而引起的对接焊缝缺陷是造成应力腐蚀断裂的主要原因之一。
In the long pipeline, because the end surfaces of the welded pipes have the geometrical errors which induce the butt weld defects, the stress corrosion crack will occur.
研究造成82B盘条冷加工断裂的主要原因，重点阐述高碳钢连铸小方坯中心碳偏析和夹杂物的控制措施。
The main causes for bringing about cold drawing fracture of 82b wire rod are investigated. The control measures of center carbon segregation and inclusions of high car...
碳氮共渗工艺选择不当，共渗层过深，表面出现壳状碳氮化合物、内氧化等缺陷组织是造成其断裂的主要原因。
The unsuitable carbonitriding process, internal oxidation, over deep depth of carbonitrided layer and crust like C N compound on the surface are the main reasons to cause fracture.
结果表明，原材料中存在的夹杂物、晶粒粗大及混晶等冶金质量缺陷是盘条在拉拔过程中发生断裂的主要原因。
The results showed that the metallurgical defects such as inclusions, coarse crystal grains and asymmetry of the grain size were the main reason resulting in fracture of the steel rods during drawing.
对创意决策、一度创作这两个龙头要素流于失察、疏于管理，是导致剧目创演成绩不佳、产业链断裂的主要原因。
Ignorance of original decision and first-stage creation are main reasons leading to bad outcome and rupture of industry chain.
船舯断裂的主要原因之一是船体构件因长期受到腐蚀、疲劳等作用而造成船舯剖面模数降低，进而削弱了总纵强度。
The rupture in the middle of bulk cargo is due to the corrosion and fatigue of components in long term usage, which leads the section modulus to reduce and the general longitudinal strength to weaken.
其中转轮的焊接残余应力是导致转轮叶片出现断裂的主要原因，所以对转轮叶片上的焊接残余应力的研究是非常有必要的。
The welding residual stress of the runner is the main reason which leading to the fault of the runner blades, so the study on the welding residual stresses of the runner blade is necessary.
对45钢力学拉伸试验后试样的内部组织结构及断口的全面分析，认为钢中存在较高含量的氢是造成钢材脆性断裂的主要原因。
The internal structure and fracture features in samples 45 steel after tensile testing is perfectly analyzed in this paper.
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