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.
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
3.
paranemic spiral
平行螺旋，反向双股螺旋
4.
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
5.
helical curve [ line ]
螺旋曲线螺旋(取向)照相
6.
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
7.
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
8.
a twin-screw cruiser
双螺旋桨的机动游艇.
9.
double torsion machine
双列螺旋弹簧卷绕机
10.
electron-nuclear double resonance helix
电子-核子双共振螺旋管
11.
ectron-nuclear double resonance helix
电子核子双共振螺旋管
12.
double helical (spur) gear
双螺旋齿轮，人字齿轮
13.
The Study of High Performance Co-Rotating Twin-Screw Extruder and Devolatilization Mechanism;
高性能同向旋转双螺杆挤出机的开发及其脱挥理论的研究
14.
Double Spiral Fluting Tap, a New Type Threading Tool
一种新型的螺纹工具——双螺旋槽丝锥
15.
side fire helical antenna
侧向辐射式螺旋形天线
16.
Study on Casting Process Numerical Simulation for Grinding Machine of Double Helix Scroll Cover
双螺旋辊式磨浆机螺旋套铸造工艺数值模拟
17.
Cloning and Characterization of the Bidirectional Hydrogenase Genes and the Application in Phylogenic Study of Arthrospira and Spirulina;
双向氢化酶基因的克隆、分析及其在节旋藻和螺旋藻分子系统学中的应用
18.
Of or relating to a gastropod shell that coils clockwise and has its aperture to the right when facing the observer with the apex upward.
右旋的软体动物的螺形外壳上的螺线顺时针螺旋即顶点向上，面对观察者时，螺线向右旋转