dimensional tolerance短语¹⁴⁴⁹⁷²⁺² 基本例句 尺寸公差 The factors affecting the dimensional accuracy of plastics products are very complex. The dimensional tolerance characteristics which are suitable for metal products are not for plastics products. 对于塑料制品,影响其尺寸精度的因素很复杂,不能简单套用金属制品的公差规律。 chemyq