螺旋

In the article,technologies of examining the liver diseases in children at present,including traditional biochemical examining,ultrasound-guided needle aspiration biopsy and interventional therapy,contrast-enhanced ultrasound,magnetic resonance cholangiopancreatography,multislice spiral CT and multislice spiral CT angiography,hepatobiliary scintigraphy,indocyanine green excretive test as well as screening program for inborn errors of metabolism etc,were reviewed.

本文就目前儿科肝脏疾病的传统生化检查及B超引导下肝穿刺术和介入治疗、超声造影、磁共振胆胰管成像、多层螺旋CT及多层螺旋CT血管成像、核素肝胆显像、吲哚氰绿实验、遗传代谢筛查等技术进行综述。

The influence of injection conditions on the electron trajectory is discussed.As special cases of the present analysis,bi- filar a...

作为特例分析了双螺旋线及四螺旋线静电焦系统，并给出了相应的普适计算曲线。

Involute curve and spiral curve are driven by filar involute function equation and spiral curve equation respectively and main dimensions of the model are controlled by the relation.

利用渐开线方程和螺旋线方程驱动生成渐开线和螺旋线，同时又对模型主要尺寸通过关系式进行控制。

The method of simulating a helically invariant field with composite period of multiplicity is also given.

本工作亦给出了由若干不同的方位向周期性的螺旋导线所合成的螺旋对称磁场的模拟方法。

Based on Chen's correlation and our experimental data, a new revised correlation was proposed for the calculation of frictional pressure drop of gas liquid two-phase flow in helically coiled tubes oriented with various axial angles.

在对试验结果及前人研究结果进行详细分析的基础上，获得了第一个能适用於不同倾角放置螺旋管的单相及汽液两相摩擦阻力计算式，从而为汽液两相摩擦阻力及螺旋管的进一步研究和应用提供了依据。

It consists of 7 transmembrane α-helices, and each is about 25 residues in length.

腺甘酸A2A受体在结构上由7个α－螺旋组成，每一个螺旋的长度大约为25个胺基酸的长度。

Thus, the statistics that there are more shortest α-helices than 3(subscript 10)-helices of the same length can be understood.

因而，在同样长度下α-螺旋比3(下标 10)-螺旋多的统计结果能够被理解。

The universality of application of helicoidal surfaces in the engineering, the importance of their performance in the certain field and the non-replaceability of their functions in the specified mechanical systems have resulted in that the technology of measurement for helicoidal surfaces has been a critical research project in the field of dimensional measurements.

螺旋曲面在工程中应用的广泛性、在一定领域中其性能的关键性以及在特定机械系统中其功能的不可替代性，决定了螺旋曲面测量技术历来是几何量计测技术中一项重要研究课题。

It is made up of a guide needle (11) which houses two or more active radio-frequency wires (14, 15) connected at their proximal end to a radio-frequency generator and each one having a spiraled, helicoidal or spiral, distal segment 14'.

其由引导针(11)构成，该引导针藏有两根或更多活动射频导线(14、15)，该导线在其近端连接到射频发生器，并且每根导线具有绕成螺旋的、漩涡状的或螺旋状的远端段(14′、15′)。

The electro-optic effect utilizing the change of a light scattering by transition between wound and unwound states of the helicoidal structure characteristic of ferroelectric liquid crystal shows a low threshold field and a short response time in range of EMBED Equation .

在电场作用下液晶的螺旋态和螺旋展开态之间的转换，由此引起光散射的变化所产生的电光效应，其阈值电场极小，并与盒厚和温度有关，响应时间在μs级

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。