查询词典 conical helix

Consequences of the rotation of DNA are illustrated in Figure 9.17 in the twin domain model for transcription. As RNA polymerase pushes forward along the double helix, it generates positive supercoils ahead and leaves negative supercoils behind. For each

超螺旋与转录还有更多的关系，RNA聚合酶转录DNA时，解链和复链同时也发生，如同Fig113中所示，这需要整个转录复合体绕DNA旋转或者DNA自己绕它的双链轴旋转，DNA旋转的后果如Fig11.19所示，图中是一个转录的双结构域模型，当RNA聚合酶沿DNA前移时，在酶前产生正双螺旋，酶后为负的双螺旋；每一个双螺旋转角被RNA跨越后都会在前面产生+1转角，后面产生-1转角。

The 60s helix spaned from Glu-61 to Tyr-67 in imidazole cytochrome c while it spaned from Glu-61 to Glu-69 in cytochrome c.

与cyt c中的60s螺旋延伸到Glu-69情况不同，在Im·cyt c中60s螺旋仅延伸到Tyr-67。

Introduced a new type of helix screw thread pipe heat exchanger, all stainless steel and advanced heat transfer technology in the application of raw material medicine has greatly improved the recovery of solvents to enhance production efficiency, effectively enhanced the competitiveness of enterprises .

介绍一种新型的螺旋螺纹管换热器，全不锈钢材质及先进的换热技术在原料药行业的应用，大大的提高了溶媒回收率，提高了生产效率，有效地增强了企业的竞争力。

Key words: helix screw thread pipe;intermediate medicine; application

要害词：螺旋螺纹管；原料药；应用

Included are the measurements of the tooth profile deviation of a shaving cutter based on the generalized polar coordinate method, and of the helix deviation of the shaving cutter using curvature method to automatically identify the boundary points; the measurements of the tooth profile of a modified hobbing cutter, and of deviation of contact line of the hobbing cutter by means of the generalized cylindrical coordinate method; the measurement of the deviation of tooth profile of a non-linear worm .

这些测量包括：①基于广义极坐标法的剃齿刀齿廓误差测量，以及采用&曲率法&自动识别界点的剃齿刀螺旋线误差的测量；②修形滚刀的齿廓测量，以及基于广义圆柱坐标法的滚刀啮合误差的测量；③非线性蜗杆的齿廓误差测量。

By means of the plating technology and the system designed and made ourselves, we call them as the direct-heat evaporating roll-pulled with vacuum piston and the helix evaporating of straight heat-wire with the negative thermal specific resistance , the align polishing ring films and the separating ones of pure gold have been plated directly at the inner wall of the capillary of Sealed-off CO〓 laser.

简便有效地使器件的输出功率、光束品质、稳定性和使用寿命都得以提高的作用效果；分析了放电驱动催化机理及催化效果与器件参数、工作状态及其中的等离子体过程的对应关系，建立了数学模型，编程数值计算了放电管内正柱区中等离子体参数分布及其与器件工作外参数的关系；利用我们设计开发的直热式真空活塞卷拖和负阻直热丝螺旋蒸镀工艺及制作的系统，在封离型CO〓激光器毛细管玻璃内壁上直接镀制出了单质金的镜面环膜和离散膜，经理论分析和实验检验，指出美国专利4756000号的环金方案将导致器件工作特性的改变和恶化，降低效率；肯定了正柱区边界部分场对建立良好的激光振荡的作用意义，明确提出了①作为高品质器件设计基础的弥散膜催化剂；②高斯管型弦驻波振动定型磨制、检测的新概念及相应的制备加工工艺；实际制出了管子，测定了其基本的工作特性和初期过程。

In order to real-timely and accurately measure thread parameters such as thread angle(tooth-type half-angle),screw-pitch,lead,thread height,major diameter,minor diameter,pitch diameter,helix angle etc,and enhance the measuring accuracy,a non-contact thread parameter measuring system based on an array CCD was designed and achieved.

为实时准确地对螺纹的牙型角、螺距、导程、螺纹高度、大径、小径、中径、螺纹升角等参数进行测量，并提高测量精度，设计并实现了基于面阵CCD的螺纹参数非接触测量系统。

Methods All the 18 cases confirmed by surgery and pathology of benign liver space-occupying lesions of the helix CT and enhanced CT scans were retrospectively analyzed.

对18例经手术病理证实的肝脏良性占位性病变的螺旋CT平扫和增强扫描进行回顾性分析。

And he is in broadcast a page to did not add Helix guard against theft, can open directly, make stationmaster of a lot of forum is willing to keeping igneous picture, the when watching an address, loves to connect him station of sea thief, make those stationmaster will help him popularize a website, made full use of Web2.0 human characteristic.

而且他在播放页面没加helix防盗，可以直接打开，使很多论坛站长愿意在写火影，海贼的观看地址的时候都爱连到他的站，使那些站长来帮他推广网站，充分利用了 web2.0 人际特点。

The simulation model for helix slow wave structure with three rods is modified from one screw-pitch to one third.

将具有3根夹持杆的螺旋线慢波结构的仿真模型从1个螺距的长度缩小到了1／3个螺距。

He paid $5,000 for this cupcake.

他我这个纸杯蛋糕花了5000美元。

I mean, if you want to, that is

我的意思是，如果你们想吃的话。