英语语法分析

The surface testing of aspheric and optical part is especially difficult, which is big scale and high precision.

尤其是大型高精度的非球面光学零件，面形检测难度更大。

The further research may provide an effective and reliable quantitative testing method for the exact-grinding and initial polishing of aspheric surfaces.

它的深入研究，将为大口径非球面精磨和初抛光阶段提供一种有效、可靠的定量检测手段。

The mold employed fluidcylinder, secondary gate, secondary locating with pyramidal face and guide pillars, which ensured the precision of the plastic aspheric lens.

此模具拥有液压缸压缩、二次浇口注射，以及锥面与导柱的二次定位等特点，能够准确地保证塑料透镜的精度。