Please give me a ring about six o'clock if you can go to the party.
如果你能参加舞会，请在六点左右给我打个电话。
The strength question of a key component-the big gear ring, about the equipment of ladle rotating table in a steel plant is discoursed.
讨论了某钢厂钢包旋转台设备中的一个关键零件——大齿圈的强度问题。
The strength question of a key component-the big gear ring, about the equipment of ladle rotating table in a steel plant is discoursed.
讨论了某钢厂钢包旋转台设备中的一个关键零件——大齿圈的强度问题。
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