1.
Research on Performance of Dry Gas Seal with Single-row Bidirectional Spiral Grooves
单列双向螺旋槽干气密封的性能研究
2.
paranemic spiral
平行螺旋，反向双股螺旋
3.
Double Spiral Fluting Tap, a New Type Threading Tool
一种新型的螺纹工具——双螺旋槽丝锥
4.
double torsion machine
双列螺旋弹簧卷绕机
5.
An individual spiral or ring within such a series.
一圈在一系列中单个螺旋线或环
6.
The valve cover shall be held in place through the use of a single grooved style two-bolt coupling.
阀盖应该通过单个沟槽状双螺栓联结器固定住。
7.
spiral flute machine reamer with straight shank
螺旋直柄槽机用铰刀
8.
spiral fluted expansion hand reamer
螺旋槽可胀式手铰刀
9.
spiral flute machine reamer with taper shank
锥柄螺旋槽机用铰刀
10.
Study on Extrusion Modeling of Twin Screw Pulping Extruder Considering Reverse Threads
考虑反向螺旋的双螺杆磨浆机挤压建模
11.
helical curve [ line ]
螺旋曲线螺旋(取向)照相
12.
It uses two-way cutlery device to finish noching the paperboard bag, color bag and ocatgonal bag simultaneously.
双向进刀，并列纵横向一次完成纸张开槽工序。
13.
Analysis on Bifilar Hemispherical Helical Antenna Array Based on MOM
基于矩量法的双臂半球面螺旋天线阵列分析
14.
Analysis of the Dynamic Performance and the Stability of Liquid-lubricated Herringbone Grooved Journal Bearing (HGJB) with Micro-polar Lubricants;
螺旋槽微极性液体润滑径向轴承动力特性与稳定性分析
15.
They find a third, separated strand in the center of the double helix.
他们发现了第三条，在双螺旋体中心的单独条。
16.
Research on Technology of Twin Symmetry Roll Axial Rolling Spiral Bevel Gear;
对称双辊轴向轧制螺旋锥齿轮工艺研究
17.
Research of the Anti-blocking Equipment with Two-way Helix Reamer for a Wheat No-tillage Drill
小麦免耕播种机双向螺旋刀防堵装置的研究
18.
New Technology of Twin Symmetry Roll Axial Rolling Passive Spiral Bevel Gears
对称双辊轴向轧制从动螺旋锥齿轮新工艺