double-helix hypothesis双螺旋假说
double-helix ct双层螺旋ct
double stranded helix双螺旋;双股螺旋英语;双股螺旋
Double-Helix整行麻花扭
double e helix双螺旋;双螺旋结构
double dna helixdna双螺旋
nuclear double resonance helix电子核子双共振螺旋管
electron-nuclear double resonance helix电子;核子双共振螺旋管
double-helix single screw pump双头单螺杆泵
The Co(II) centers are linked by pbbt ligands leading to the double helix chain. Along b-axis and c-axis directions, weak interactions between adjacent chains also exist between two Py.
中心原子Ni处于扭曲的八面体中心，pbbt作为桥联配体连接各个结构单元形成一条沿a-轴方向无限延伸的一维双螺旋链，沿着b和c-轴方向每条链上的苯环之间存在着弱的π—π作用，由此形成了二维的双螺旋网络结构。
参考来源 - 氮杂环组装的多聚配合物的结构及性能研究The circulatory system of the pulp is reverse direction and the hob bit scatter at the plate as double helix for the remove of the rock residue.
滚刀钻头上的滚刀采用双螺旋线分布，以利于岩渣的排出。
参考来源 - 特殊地层中大口径钻孔灌注桩施工技术的研究N（名词） the form of the molecular structure of DNA, consisting of two helical polynucleotide chains linked by hydrogen bonds and coiled around the same axis DNA结构中的双螺旋 [biochem]