骑缝章的英文：
a seal on the perforation

seal是什么意思：
n. 海豹；图案，印章；封印；保证，誓约；标志，象征
v. 保证；密封；确定；盖章；密封
  • A stamp or seal meant to be impressed.
    图章用来盖戳的图章或印章
  • The experience seals their friendship.
    这一经历确定了他们的友谊。
  • Sealing is prohibited in many countries.
    许多国家禁止捕海豹。
  • The probe unit is hermetically sealed.
    探头装置是密封的。
  • It was stored in a tube with a break seal.
    它保存在一个有断裂密封垫的试管里。
perforation是什么意思：
n. 穿孔,贯穿,贯通
  • single-perforated grain
    单孔药柱
  • This machine perforates the sheets of stamps.
    这台机器在这整版邮票上面穿孔。
  • The broken ribs perforated into his lung.
    折断的肋骨刺穿了他的肺。
  • The samples are collected in perforated polyethylene bags
    样品采集在有孔的聚乙稀袋中。
  • One patient suffered a bowel perforation.
    一位病人患了肠穿孔。

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