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- double helical heater 双螺旋灯丝,双螺旋线灯丝
- Double helical structure of DNA and types of DNA helices. 去氧核糖核酸的双螺旋结构与其类别。
- We also demonstrated that a DX molecule containing another small double helical region (called a DX + J molecule) is very stiff. 我们也证实，DX分子外加其他双股螺旋小片段所形成的DX+J分子也一样坚固。
- Using 2-aminopyridine as an organic ligand and a structure-directing agent, we have synthesized a new zinc phosphite (C5H6N2)Zn(HPO3) containing double helical chains. 我们以2-氨基吡啶为结构导向剂和配体分子，合成了一种新颖的具有双螺旋链的亚磷酸锌层状化合物(C5H6N2)Zn(HPO3)。
- double helical gear milling machine 人字齿轮铣齿机
- double helical double-reduction unit 两级人字齿轮减速器
- double helical double reduction unit 两级人字齿轮减速器
- double helical ribbon and screw impeller 双螺带-螺杆搅拌桨
- Pilot-scale Study on Swirling Flow by Double Helical Inlets 双进口涡向起旋流场实验研究
- helical heater 螺旋灯丝
- Gear drawing standards - Part 1: For Spur, helical, double helical and rack 齿轮制图标准。第1部分:正齿。螺旋齿。双螺旋齿和齿条
- He is working double tides to finish his essay. 他日夜苦干，赶写他的文章。
- I do not realize it is a double feature. 我原先不知道这是双片连映。
- Double agents live in a perpetual state of fear. 两面派永远过着提心吊胆的生活。
- I want a double room with a view. 我要一间能看到风景的双人房间。
- He was so fat that he had a double chin. 他胖得有双下巴了。
- Discussion on Transposition Direction of Conductors in Double Helical Winding 双螺旋绕组的导线换位方向的探讨
- The carpet is too thick to double up. 这地毯太厚没法折叠。
- Is the material single width or double width? 这幅料子是单幅的还是双幅的？
- Reserve double room June fourth to tenth inclusive. 预订双人房间，六月四日至十日，共六晚，望订妥复电。
