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.
并通过实例，对柿子干制时的体积收缩率和表面积收缩率进行了计算。
Introducing the example, volume and coverage shrinkage rate of persimmon were calculated.
一方面，基于叶片收缩变形位移场的有限元仿真结果，更为准确地计算铸件不同部位的收缩率；
On the one hand, casting shrinkages at different positions of the blade are considered as nonlinear thermo-mechanical casting deformations that are calculated with accuracy by finite element analysis.
计算结果表明，干制后形状呈球台体较球体的体积收缩率和表面积收缩率均小，有利于表观质量的提高。
The result shows that volume and coverage shrinkage rate of persimmon in sphere cylinder are smaller than in sphere. Drying persimmon in...
计算结果表明，干制后形状呈球台体较球体的体积收缩率和表面积收缩率均小，有利于表观质量的提高。
The result shows that volume and coverage shrinkage rate of persimmon in sphere cylinder are smaller than in sphere. Drying persimmon in...
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