穿孔 [ㄔㄨㄢ ㄎㄨㄥˇ; chuan1 kong3]
  to punch or bore a hole
  to perforate
  perforation
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  穿孔
  せんこう
  noun (common) (futsuumeishi)
  noun or participle which takes the aux. verb suru
  perforation
  punching (a hole)
  rupture
  computer terminology
  punch
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