This article proves that rolling operation can largely enhance fatigue strength through the research on the cold rolling operation of thread root of the drilling tool joint.
通过石油井下钻具接头螺纹冷滚压工艺的研究可以证明冷滚压可大大地提高接头的疲劳强度。
This tracing starts with the root set, which consists of internal structures such as thread stacks and global references to objects.
这个跟踪以根集开始，它由一些内部结构组成，比如线程栈和对象的全局引用。
The model needs to include a mechanism for passing root objects to each iteration that can be used to store and retrieve objects that have a lifetime of Retain Thread Group or Retain Thread.
模型需要包含一种机制，将根对象传递给用于存储和检索生存期为RetainThreadGroup或Retain Thread的对象的每个迭代。
In particular, it can help you root out the pitfalls of using the JNIEnv with the wrong thread and using critical regions incorrectly.
特别是，它可以帮助您确定在错误线程中使用JNIEnv以及未正确使用关键区域的缺陷的根源。
The root of the external thread or the crest of the inner thread .
大径指过外螺纹牙顶或内螺纹牙底的圆柱面直径。
The infection-thread enters and branches in cells of the root cortex .
侵染线进入根的皮层细胞并进行分枝。
"Jennifer machine" can be spun a number of the root thread, which greatly increased productivity.
“珍妮机”一次可以纺出许多根棉线，极大的提高了生产率。
Through metallographic analysis of the material, microstructure change and deformation mechanism of crest, flank and root of the thread along the layer depth direction were obtained.
结果表明，牙顶处金属材料受到丝锥棱齿的压力相对较小，并且金属流向牙顶两侧上方的区域时受到的阻力最小；
Through metallographic analysis of the material, microstructure change and deformation mechanism of crest, flank and root of the thread along the layer depth direction were obtained.
结果表明，牙顶处金属材料受到丝锥棱齿的压力相对较小，并且金属流向牙顶两侧上方的区域时受到的阻力最小；
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