In order to increase the dimensional accuracy and other properties of strip steel used for the tyre rim of bicycle, the experiments on rolling process and heat treatment are made.
本文为提高自行车钢圈用带钠的尺寸精度和各项性能进行了轧制和热处理工艺试验，得出了好的工艺制度。
A strip of rubber around the rim of the box increased its insulating properties.
其边缘的橡胶条增加了它的绝缘性。
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