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钎 (qiān) denotes metal tools for drilling, boring, or piercing hard materials and also the metallurgical process of brazing or soldering metals together. It is a phono-semantic compound: the left-side radical 钅 (jīn, 'metal') classifies it as a metal tool or process, while the right-side component 千 (qiān) is a pictograph of an awl that also supplies the pronunciation. The traditional equivalent 釺 uses the full unsimplified radical 金 (jīn); both forms are common in engineering, construction, and manufacturing vocabularies for drill bits, soldering rods, and mechanical boring equipment.
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