圆棒的外圆和环形件的内圆需经事先加工并具有一定的精度。

Thee outer circle ring rod inner circle without prior processing and has certain precision.

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密封件为用细毛毡制成的环形毡圈。

Seals made blankets for the use of small circular loop carpet.

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“你们的精力要放在环形赛场内，”裁判讲道：“这是一件正事。”

"Your business should be focused in the ring," the judge said. "This is a business."

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“你们的精力要放在环形赛场内，”裁判讲道：“这是一件正事。”

"Your business should be focused in the ring," the judge said. "This is a business."

youdao