helix

• A similar - helix model of drillpipes buckling
  钻柱失稳的准螺旋模型研究
• Calibration specification for gear helix measuring instruments
  齿轮螺旋线测量仪器校准规范
• The helix makes a complete turn every 4 . 4nm
  螺旋旋转一周为4 4nm 。
• Bifilar helix biperiodic electrostatic focusing
  双螺线双周期静电聚焦
• Hydrogen bonding between successive coils holds the helix together
  氢键维持着螺旋的稳定。
• Verification regulation of gear helix master
  齿轮螺旋线样板检定规程
• Parametric design of helix shearer drum
  采煤机螺旋滚筒的参数化设计
• Striation - defects or contaminations found in the shape of a helix
  条痕-螺纹上的缺陷或污染。
• 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。
• The r group of these amino acids extends outward from the helix
  这些氨基酸的r基团伸向螺旋的外侧。