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- Double helical structure of DNA and types of DNA helices. 去氧核糖核酸的雙螺旋結構與其類(lèi)別。
- The kinematic relationship between the wheel and the cutter is analyzed.An algorithm of computing tool path for grinding helical curve cutter with CNC ginder is given. 分析了砂輪與刀具前刀面之間的相對位置關(guān)系，給出了數學(xué)模型，提出了數控磨削螺旋刃刀具刀位軌跡生成的實(shí)用方法。
- We also demonstrated that a DX molecule containing another small double helical region (called a DX + J molecule) is very stiff. 我們也證實(shí)，DX分子外加其他雙股螺旋小片段所形成的DX+J分子也一樣堅固。
- 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. 我們以2-氨基吡啶為結構導向劑和配體分子，合成了一種新穎的具有雙螺旋鏈的亞磷酸鋅層狀化合物(C5H6N2)Zn(HPO3)。
- This paper introduced setting up the parametric expressions, and how to creating the helical curve and unwrapping the curve on the plane based on UG by the parametric unwrap equation of concrete-mixer drum logarithm helical curve. 推導出攪拌運輸車(chē)攪拌筒對數螺旋線(xiàn)平面展開(kāi)方程,用UG的參數表達式來(lái)實(shí)現螺旋線(xiàn)和在平面上展開(kāi)曲線(xiàn)的生成。
- concrete- Mixer drum helical curve 攪拌罐螺旋線(xiàn)
- Non-equiangular logarithm helical curve 非等變角對數螺旋線(xiàn)
- double helical gear milling machine 人字齒輪銑齒機
- double helical double-reduction unit 兩級人字齒輪減速器
- double helical double reduction unit 兩級人字齒輪減速器
- double helical ribbon and screw impeller 雙螺帶-螺桿攪拌槳
- Pilot-scale Study on Swirling Flow by Double Helical Inlets 雙進(jìn)口渦向起旋流場(chǎng)實(shí)驗研究
- Complicated helical curved surface 復雜螺旋曲面
- He is working double tides to finish his essay. 他日夜苦干，趕寫(xiě)他的文章。
- Parametric Expression Design of Concrete-mixer Drum Helical Curve and its Unwrapping Based on UG 攪拌筒螺旋線(xiàn)平面展開(kāi)方程及基于UG的參數化表達式
- I do not realize it is a double feature. 我原先不知道這是雙片連映。
- Double agents live in a perpetual state of fear. 兩面派永遠過(guò)著(zhù)提心吊膽的生活。
- I want a double room with a view. 我要一間能看到風(fēng)景的雙人房間。
- He was so fat that he had a double chin. 他胖得有雙下巴了。
- Keywords Silk loom, let-off mechanism, ratchet gearing, Free-wheeling clutch, Logarithm helical curve; 絲織機;送經(jīng)機構;棘輪機構;超越離合器;對數螺旋曲線(xiàn)（面）;
