用常规的幂强化公式计算药筒在引伸后的强度时，数值偏低较多，原因是该公式未考虑引伸凹模锥角对强化的影响。
But the strength of the cartridge case after ironing drawing cannot be accurately calculated by this formula, because the result of calculation is lower than that reached in practice.
所有病例根据手术切除范围、术后照射范围大小以及后颅凹照射剂量的不同，分三组进行1、3、5年生存率及预后因素的分析。
The cases were divided into three groups according to resection scope, radiation range and radiation dose of Posterior Fossa. Each group was analysed with 1, 3, 5 year survival rates and prognostic.
然而用标准渐开线齿形剃齿刀剃齿后，在工件齿形节点附近会出现不同程度的“中凹”现象。
However, after shaved by shaving cutter with true involute profiles, there are the "mid-concave" phenomena on the pitch points of shaved gear tooth profiles inevitably.
结论：骨质疏松患者的脊柱畸形主要表现为脊柱的局部后凸尤其是胸段脊柱后凸角度的增大，其中又以凹圆背畸形最为多见。
Conclusion: the spinal deformities in osteoporotic patients are characterized by the local kyphosis of spine, especially thoracic kyphosis, and hollow round back is the most common deformity.
峰后泊松比与轴向压应力之间的关系可能是一条直线，也可能是上凸的，或上凹的。
It is possible for linear, upwards concave or upwards convex relations between the post-peak Poisson's ratio and the flow compressive stress.
针对热轧带钢因卷取后钢卷内外圈与芯部的冷却速度不同，导致带钢成品头尾强度高、塑性低的问题，提出了卷取温度凹型控制模式。
U-shaped control model for coiling temperature was put forward to improve the high strength and low plasticity of head and tail of hot rolled strip.
后颅凹肿瘤即幕下肿瘤，是位于小脑蒂以下的肿瘤。
The skull concave tumor is under the curtain the tumor, is located below the cerebellum peduncle the tumor.
目的讨论外伤性后颅凹血肿的诊断和治疗。
Objective to discuss the diagnostic and therapeutic principle of traumatic posterior skull fossa hematomas.
由冲裁变形过程的分析可知，决定合理间隙值的理论依据是应保证在塑性剪切变形结束后，由凸模和凹模刃口处所产生的上、下剪切裂纹重合。
According to the blanking distortion procedure, the theory that decide the proper gap is to make sure the edge of the male die and female die's gap can be superposition.
方法制作内凹齿钥匙正常开锁和被钥匙机复制后的样本，用光学显微镜拍照固定痕迹特征。
Method Samples of manipulated keys and keys that used as guide in a duplication process are made. Marks and striations on the keys are photographed and analyzed by light microscopy.
针对数值分析后的模型，采用激光选区烧结法快速制作零件及凹模的实体原型。
The rapid prototypes of the part and its die were fabricated by selective laser sintering (SLS), a rapid prototyping technique.
在融化过程中，冰的形状出现明显的差异：施加电场后冰块的上表面出现下凹，并且冰块贮存了负电荷。
In the melting process, the shape of the unmelted ice showed obvious difference, the top of the ice in the high voltage electric field was concave and this ice was electricized with negative charges.
以角膜顶点至黄斑中心凹距离作为视轴长度，此连线上测量硅油后间隙的厚度。
The length of the visual axis was the distance from the corneal vertex to the macular fovea, and it was also measured by A-mode ultrasound in sitting position with different ultrasonic velocity.
以角膜顶点至黄斑中心凹距离作为视轴长度，此连线上测量硅油后间隙的厚度。
The length of the visual axis was the distance from the corneal vertex to the macular fovea, and it was also measured by A-mode ultrasound in sitting position with different ultrasonic velocity.
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