1.
paranemic spiral
平行螺旋，反向双股螺旋
2.
The two strands of the double helix are linked by pairs of nucleic acids like the treads in a spiral staircase.
这个双螺旋结构的两股之间是由成对的核酸联结的，它们就像螺旋式楼梯中的踏步板。
3.
a twin-screw cruiser
双螺旋桨的机动游艇.
4.
double torsion machine
双列螺旋弹簧卷绕机
5.
electron-nuclear double resonance helix
电子-核子双共振螺旋管
6.
ectron-nuclear double resonance helix
电子核子双共振螺旋管
7.
double helical (spur) gear
双螺旋齿轮，人字齿轮
8.
Double Spiral Fluting Tap, a New Type Threading Tool
一种新型的螺纹工具——双螺旋槽丝锥
9.
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
10.
A triple helix features three bands of ribbons that are braided in a rope like fashion.
三角形的螺旋结构是由三股线编成一股。
11.
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
12.
There are five other double helix pairs in the DNA system.
在dna系统里还有五条其它的双螺旋对。
13.
coil spring loaded slotted oil control ring
螺旋弹簧加载双坡口油环
14.
DNA double helix structure
脱氧核糖核酸双螺旋结构
15.
A Backfire Antenna Fed by a Bifilar Backfire Mode Helix
双线背射模螺旋作馈源的背射式天线
16.
A New Backfire Antenna Fed by a Bifilar Backfire Helix
双线背射螺旋作馈源的新式背射天线
17.
Double-helix staircases link all three levels.
双螺旋楼梯将上下三层连接了起来。
18.
Application and Dissemination of Double-Vortex Seal in Pipeline Pump.
双螺旋密封在长输油泵上的推广应用