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What's the middle copper rivet for? But some spearhead is made all by iron?
中间的铜铆是何用途?可有些枪头又完全是铁造?。
youdao
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The present invention also relates to a rivet nut for a cast-in channel.
此外，本发明涉及一种用于锚轨的铆接螺母。
youdao
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The present invention also relates to a rivet nut for a cast-in channel.
此外，本发明涉及一种用于锚轨的铆接螺母。
youdao