| 摘要 |
An animal ear tag including coupling means (12, 14, 21) for installing the e ar tag with an animal's ear, the coupling means having a stem (12) with a head portion (14) and a female opening (21) through which the head portion (14) can pass to effect a coupling action, the female opening (21) being formed as part of a separate enclosed boss component (17) of hard material which is fastened to material forming a further part (11) of the ear tag.
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