螺旋

Objective To assess the diagnostic value of CT enterography in patients with Crohn's disease. Methods Multi-detector CT enterography and small bowel follow-through were performed in 30 patients with Crohn's disease.

目的 将多层螺旋CT小肠成像与传统的小肠造影进行对比，了解CT小肠成像对克罗恩病的诊断价值。

To improve the machining efficiency and precision of convex screws,a new method was put forward for inner whirlwind NC enveloping milling of screw curved surface.

为提高凸螺杆的加工效率和加工精度，将具有切削平稳、效率高等特点的传统旋风铣削技术与具有轨迹控制灵活等特点的数控技术相结合，提出了内旋风数控包络铣削螺杆螺旋曲面的新方法。

Objective:To study the value of CT diagnosis of infantile epilepsy.

目的：分析螺旋CT扫描在小儿癫痫诊断中的应用价值。

This technique is presented to calculate the far field around the equiangular spiral antenna using the formula according to the former theoretical result.

通过给出该假设下射线场幅度和方向的分布，文中具体计算了平面等角螺旋天线在罩内的远区特性。

In Newtonian mechanics, the motion of the charge in magnetic field is in equidistance helical line. It is composed of the uniform motion in magnetic field and the circular motion vertical to the magnetic field.

带电粒子在磁场中的运动，如果用经典力学分析，它做等距螺旋运动，是在垂直磁场平面内两个相互垂直方向的简谐振动和沿磁场方向匀速运动的合成。

Explanation: Big, beautiful, barred spiral galaxy NGC 1300 lies some 70 million light-years away on the banks of the constellation Eridanus.

说明：巨大，美丽的带状螺旋星系NGC1300位于大约七千万光年外的波江星座。

For the first time, we identify that the helical structure appeared in an eruptive sinistral filament was left-helical one.

在一个左旋爆发暗条中，我们首次认证了其螺旋结构是左旋的。

Purpose: To evaluate the ethmoid sinus variations by three - dimensional spiral CT images and its clinical significance.

目的：探讨应用螺旋CT对筛窦进行三维图像重建，认证筛窦解剖变异及临床意义。

We find that to form a helix, the Euler angle must be a constant determined by the spontaneous curvatures.

我们发现要形成螺旋形，Euler角必须为常数并由自然曲率所决定。

In production, the main difficulty is the manufacture of the evaporator spiral wall especially it's transition section.

此锅炉制造中最大的难点在于螺旋水冷壁，特别是其中过渡段的制造。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。