Tolerances cover dimensional variation and surface-roughness range and also the variation in mechanical properties from heat treatment and other processing operations.
公差这个概念既包括尺寸偏差范围和表 面粗糙度范围， 也包括由热处理和其它处理操 作所引起的机械特性的变化。
The steel dies with high dimensional accuracy, low surface roughness and long service life have been quickly produced by using prototyping resin molds as patterns of ceramic investment casting.
直接利用激光快速成型的原型树脂模，结合陶瓷型精密铸造技术，制得了高精度、低表面粗糙度、高使用寿命的钢模具。
Both dimensional accuracy and surface roughness of the metal handicraft in ceramic mold meet technological requirement.
该陶瓷型用于制作金属工艺品，尺寸精度和表面粗糙度均达到技术要求。
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