煤沥青原料的纺丝，是碳纤维制造过程中加工成型的关键步骤。
The spinning of coal tar pitch raw material is key procedure of shaping in manufacturing carbon fiber.
在纺丝过程中，要严格控制煤沥青熔体的粘度、纺丝温度、压力、卷绕速度等主要参数。
The main parameters of viscosity, spinning temperature, pressure and winding velocity for coal tar pitch fluid should be rigidly controlled during spinning.
矿藏有铬、铜、镍铁、沥青、煤、石油等。
Minerals are chromium, copper, nickel, iron, asphalt, coal and petroleum.
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