该星系的特点是亮白，其球形内核周围环绕着由星系螺旋结构形成的厚厚的尘埃带。 从地球上看去，星云倾斜得几乎侧立。
The galaxy's hallmark is a brilliant white, bulbous core encircled by the thick dust lanes comprising the spiral structure of the galaxy.
介绍了螺旋折流板换热器折流板的结构形式和特点，给出了螺旋折流板各部分几何尺寸的计算公式。
Spiral baffle heat exchanger baffle type and feature are introduced, and the calculation formula of all geometry dimension of spiral baffle are given.
天体中，从众多的硕大的旋涡状星云，到坠落于地球上的微小的陨砂、陨尘，普遍存在着螺旋状的结构形态。
There are commonly the helical structures in the celestial body from many gigantic whirl nebulae to small meteoric stone and dust falling to the Earth.
但由于螺旋立铣刀结构形状极其复杂，给设计和制造带来困难。
It is very difficult to design and manufacture milling cutter because its intricate geometry configuration.
本文介绍了螺旋气锚的结构形式、工作原理及分离系数的计算公式，论述了影响分离系数的各种因素。
This report is intended to introduce the structure and working principle of spiral gas anchor and explain the calculation formulae for separation coefficient.
分析、对比了高能螺旋压力机现有的回程机构动力传递方式、结构形式。
The existing driving types and construction of High Energy Clutch Operated Screw Press'return mechanism are analyzed and compared.
有敲击式、螺旋钉式、内六方螺钉式三种结构形式供选择；
The stop collars are available in three types: Knock-On Type, Spiral Nail Type and Set Screw Type.
从改良结构形式和传动方式两方面介绍了卧式螺旋卸料沉降离心机节能降耗的研究进展，并进行了讨论。
Technologies of energy saving from the aspects of structural design and driving system of screw decanter are reviewed. Some discussions are given.
从改良结构形式和传动方式两方面介绍了卧式螺旋卸料沉降离心机节能降耗的研究进展，并进行了讨论。
Technologies of energy saving from the aspects of structural design and driving system of screw decanter are reviewed. Some discussions are given.
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