The analytic ring field plays an important role in the power expansion of analytic functions. In this paper the author presents a method for identifying the analytic ring field of analytic functions.

函数的解析环域在幂级数展式中起着非常重要的作用，文章给出了确定函数解析环域的具体方法。

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Near the end of the expansion phase, the ring of plasma breaks open, and some of the plasma appears to escape the pull of the magnetic field loop.

在日珥的扩张接近结束时，等离子体构成的圆环猛然裂开，一些等离子似乎要挣脱磁场拉力的束缚。

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It is about the ring screw thread smoke channel of the boiler shell type gas tube in the boiler field.

锅壳式烟管锅炉烟管内置水管的环形螺纹烟道，它涉及锅炉领域。

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Everyone has their eyes on the three-ring circus of the Republican field of candidates.

FORBES: History Points to Misplaced Hope For a Second Obama Term

His efforts have paid off: a wrestling ring lies next to the soccer field, since officials wouldn't allow it inside the school building.

CNN: Wrestle Mania

It was reported that a migratory bird - a common European bee-eater - caused alarm in a village in south-eastern Turkey after it was found dead in a field with a metal ring around its leg stamped "Israel".

BBC: Quiz of the week's news