塑件的尺寸公差不能低于收缩率的10%。
The dimensional tolerance of plastic parts shall not be less than 10% of shrinkage.
另外推导了孔径收缩量的计算方法，确定了衬套孔径的实际加工尺寸公差。
In addition, the calculation method of aperture shrinkage is derived, and the real machining tolerance zone of bushing aperture is determined.
介绍塑料件的尺寸精度、塑料件尺寸公差标准，以及塑料收缩特性值同收缩率的区别和计算方法。
The dimensional precision and standard of plastic product and difference between plastic shrinking featured value and shrinkage were described.
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