Note: that this is one of very few ways to get mana steal on a ring in the Expansion.
重视：这是很少的几种在资料片中得到带吸魔法属性的戒指的技巧中的一种。
The housing has a higher coefficient of expansion than the ring.
壳体比圆环具有较高的膨胀系数。
Radical ring expansion is a new strategy to synthesize the medium-sized and even large rings, nowadays, it is one of the important research fields of organic chemistry.
而自由基扩环反应是合成中环乃至大环有机化合物的一种有效的新方法，已成为当今有机合成化学的前沿研究领域之一。
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