I want an amethyst ring, but I don't know what my ring size is.
我要一只紫水晶戒指，但是我不知道我的戒指尺码。
I want an amethyst ring, but I do not know what my ring size is.
我要一只紫水晶戒指，但是我不知道我的戒指尺码。
A simple and practical method for calculating the ring size during rolling is also given.
还给出了简单实用的环件尺寸计算方法。
Further more, the paper puts forward cost structure models of SDH ring and WDM ring and calculates the two rings'costs with varying ring size and traffic volume.
提出了SDH环和WDM环的成本构成模型，计算分析了在不同的环节点数量和不同的业务流量情况下二者的成本。
Further more, the paper puts forward cost structure models of SDH ring and WDM ring and calculates the two rings'costs with varying ring size and traffic volume.
提出了SDH环和WDM环的成本构成模型，计算分析了在不同的环节点数量和不同的业务流量情况下二者的成本。
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