1·One or two small pinholes were all I could find that need touching up.
一个或两个小针孔，都是我可以找到需要润饰。
2·Surface pinholes caused by gas formed at the mould surface.
因钢锭模表面生成气体而形成的表面针孔。
3·The existence of pinholes is a general phenomenon on thin gauge aluminium foils.
针孔是厚度较小的铝箔中普遍存在的现象。
4·It was found in experiments that the particle polishing could eliminate the passive effect of hydrogen evolution and nickel deposits electroformed without pinholes and pits could be achieved by APEF.
试验发现，游离粒子磨擦能彻底消除析氢的不利影响，利用磨擦辅助精密电铸技术能够制造出没有任何麻点、针孔等缺陷的镍电铸层。
5·Among others, surface defects such as pinholes, holes and stains appear during the production of PM components, especially after sintering.
烧结钢部件在生产过程中，尤其是烧结之后其表面有时会出现针孔、孔洞及斑痕等缺陷。