邮政日戳用铅字钉 Type for post date-stamp
工字钉 Push Pin
字钉记忆法 peg-word mnemonics
十字头铆钉 cross head rivet
十字槽盘头螺钉 cross recessed pan head screw ; Cross Recess Head Screw ; Pan head screws with cross recess
字钉
Nail
以上为机器翻译结果，长、整句建议使用 人工翻译 。
本实用新型是一种字钉型手戳的改进。手戳的特点是具有自适应性。
The utility model relates to an improvement of a nail type signet which has the feature of self-adaptability.
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