The small rust areas exhibits only minor pinholing through the surface.
很小的锈迹，仅仅针眼大小。
Storing the tubes near mercury may cause amalgamation and pinholing of the tubes.
把管壁与汞一起存放，会导致“汞齐化”，并导致管壁穿孔。
This article relates the filming mechanics of powder coatings, discusses the influencing factors on the cratering and pinholing defects and gives measures to control the defects.
阐述静电粉末涂料成膜机理，分析了影响粉末涂料缩孔、针孔的因素，并提出控制其产生弊病的工艺措施。
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