Main factors such as final heating temperature, heating time, heating speed and particle size of raw material on dry distillation of oil shale at low temperature were examined.
对影响油页岩低温干馏的主要因素进行了考察，其中包括最终加热温度、加热时间、加热速度及页岩粒度等因素。
Material in Condition a may be given a final cold drawing for size control or finish, or both, slightly raising tensile strength.
条件A的材料可以通过冷拔来控制大小尺寸和表面质量，或两者。可稍微提高抗拉强度。
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