现在，科学家已经了解到这些微小气孔收缩的机制。
Now, scientists know how these tiny pores tighten in plants.
生产结果表明，铸件没有气孔、夹砂、夹渣、收缩等铸造缺陷，铸件品质稳定。
The result shows that there are no casting defects, such as shrinkages, blowholes, and slag inclusions and the quality of casting is steady.
根据所推导的致密化方程，得到了烧结中期和后期的气孔收缩判据。
With the models and the derived densification equations, the criteria of the pore stability both in the intermediate and final stages of sintering are obtained.
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