Spiral drill: steel blades, drill, wear resistance.

1、

Mathematical Model for Variable Pitch Spiral Drill Point and Grinding Interference

变螺距螺旋面钻尖的数学模型及其刃磨干涉

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2、

They have not measured the length of spiral drill collars and monel collars yet.

他们还没测量螺旋钻铤和无磁钻铤的长度。

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3、

The Constructional Techniques and Equipment of Underwater Pile-making with Long Spiral Drill

长螺旋钻水下成桩工艺及设备

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4、

The Effective Control of Spiral Bevel Gear Quenching Distortion by Improving Quenching Dies

改进淬火压模有效控制螺旋锥齿轮淬火变形

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5、

The line that extends along the end of the extra half-plane of atoms for an edge dislocation, and along the center of the spiral of a screw dislocation.

刃型位错中多余半原子面边缘的连线，或者螺型位错中错排螺旋的中心轴线。

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6、

Conclusion: MRI and 3D SSD are effective methods in showing vertebral fracture, height, fragment fracture dislocation to vertebral canal and vertebral canal stenosis, especially, 3D SSD is much valuable in vertebral spiral dislocation.

结论：MPR和3D SSD对于椎体骨折，椎体高度、骨折片后移及椎管狭窄显示效果好，尤其3D SSD对于椎体旋转、脱位最有价值。

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7、

A Note on The Asymptotic Density-Potential Relation of The Spiral Galaxy With Finite Disk Thickness

关于有限厚度旋涡星系中密度-引力势渐近关系的一个注记

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8、

Study on sensitivity of piezo spiral transducer Acme Disk

压电盘簧换能器灵敏度研究

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9、

In addition, the spiral chart of decline disease was mapped based on the action size and time order of various nosogenetic factors during the incidence of decline disease, which was used to visually describe and quantitatively analyze the disease with complicated causes.

此外，依据各致病因素在病害发生发展过程中的作用大小和时间顺序，绘制出国外松衰退病的螺旋图，为该类病原复杂的病害形象描述和定量分析作出了探讨。

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10、

The reality that led up to the president's monumental life change is the reality that faces more and more men and women every day: the seemingly unstoppable downward spiral of coronary heart disease.

导致这位总统的生活发生如此巨大转变的现实，其实也是越来越多的男性和女性每天都在面对的：看似无法逆转的且不断恶化的冠状动脉心脏疾病。

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11、

Spiral CT: Renal Disease Applications

螺旋CT在肾脏疾病中的应用

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12、

Pork and its products not only infect people in bacterium disease, but also viral disease, parasitic disease and spiral disease, which cause different symptoms, so strengthening the quarantine is especially important.

猪肉及其产品不但能传染给人细菌病，而且还能传染病毒病，侵袭寄生虫病和螺旋体病，引起不同症状，加强检疫尤其重要。

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13、

The general situation, application features and technological and economic aspects of a new drying equipment composed of a double spiral dryer and a disc dryer are described.

介绍了新型干燥设备双螺旋干燥机和盘式干燥机结构及其应用情况。

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14、

The Numerical Calculation of Mixing for Archimedes Spiral Mixing Disc

阿基米德螺线式混炼盘混炼效果的数值计算

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15、

The use of the spiral groove of non-standard cutting tool by PRO/ E 3D software designed to simplify the basic principles and methods is presented, and processing done to the actual certification.

介绍了非标螺旋槽刀具采用PRO/E软件进行三维简化设计的基本原理及方法，并用实际加工进行验证。

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16、

In view of the time varying property of a spiral bevel gear mill cutting system, a piecewise linear and time invariant modelling approach based on time series analysis is proposed in this paper.

为了提高弧齿锥齿轮加工精度和切齿效率，提出弧齿锥齿轮铣齿机切削系统的时序分时建模系统辨识方法。

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17、

PRO/ E in Spiral Groove of Non-Standard Cutting Tool Design Applications

PRO/E在非标螺旋槽刀具设计中的应用

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18、

These rolls are corrugated cylinders, usually of the spiral type. Cutting and Precision Form of Helical Vane of Shearer Drum

粉碎辊是波纹式滚筒，还常是螺旋割纹式。采煤机滚筒螺旋叶片的下料及辗压成形

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19、

Objective To evaluate multi-slices spiral CT-guided percutaneous cutting needle biopsy in pulmonary nodules less than 3 cm in diameter.

目的评价多排螺旋CT引导下经皮肺切割针活检直径≤3cm肺结节的价值。

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20、

The Research on NC Grinding Rake& Flank Faces of Ball-end Cutters with Spiral Shape Major Cutting Edge

数控磨削螺旋刃球头立铣刀前后刀面的研究不重磨硬质合金面铣刀

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