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- According to overall principle of double helix single screw pump for linear optimization,we ensure the optimization goal and restrain terms to set up a noptimization mathematics model. 根据双头单螺杆泵线型优化的总体原则确定优化目标、约束条件,建立短幅内摆线线型的优化数学模型。
- Keywords double helix single screw pump;short-amplitude cycloid;optimum model; 双头单螺杆泵;短幅内摆线;优化模型;
- double helix single screw pump 双头单螺杆泵
- To popularize screw pumps, the authors suggest doing further research on the hydraulic single screw pump and the surface equipment.establishing test zones for the applicat... 为推广应用螺杆泵采油,建议继续开展地面机械和液压驱动单螺杆泵采油装置的研究,并建立螺杆泵应用试验区,形成和完善螺杆泵抽汲预测监测系统。
- That is what a double helix looks like. 这就是二重螺旋线的形状。
- The shape of the DNA molecule is a double helix. DNA分子的形状是双螺旋结构。
- In three dimensions. you see the double helix. 在三维次元里,你看到双螺旋。
- The computing procedure of all profiles design for double screw pump has been. 介绍了双螺杆泵各类型面设计的计算机设计程序。
- LGB screw pump is corrosion-resisitant . 并具有耐腐蚀性。
- double helix screw oil and gas mixed pump 双螺杆油气混输泵
- 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。
- Double-helix single screw pump 双头单螺杆泵
- single screw pump 单螺杆泵
- In carrying out its various duties, RNA can take the form of a double helix that resembles DNA or of a folded single strand, much like a protein. RNA在执行其各项任务时,可以形成和DNA一样的双股螺旋结构,也可以和蛋白质一样以单股折叠成不同的构造。
- model G single screw pump [化] G型单螺杆泵
- Hypochromic effect: The absorbance at 260 nm of a DNA solution decreses when the single strands return into double helix at DNA renaturation. DNA的变性从开始解链到完全解链,是在一个相当窄的温度范围内完成的。在这一范围内,紫外光吸收值达到最大值的50%25时的温度称为DNA的解链温度。
- Each step of the double helix is a base made up of two kinds of nucleic acid. 每阶二重螺旋线都是一个碱基,由两种核酸组成。
- Figure 1 express cutaway view of the three screw pump. 图1表示三螺杆 泵的剖视图。
- It has been discovered to be the double helix building block of all life. 已经发现是建造所有生命模块的双螺旋体线。
- The processing equipments of FEP masterbatch are single screw extruder and double screw extruder. FEP色母粒的加工设备有单螺杆挤出机和双螺杆挤出机两种。