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impregnated diamond bit
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impregnated diamond bit
Encyclopedia
理学
孔内钻具
释
impregnated diamond bit
孕镶金刚石钻头
细颗粒金刚石包镶在胎体内的金刚石钻头。因使用人造金刚石,又称为人造孕镶金刚石钻头,广泛用于硬地层钻进中。
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sex pheromone disruption technology
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sex ratio at birth
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sex reverse
sex revolution in Western countries
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更新时间:2026/7/2 10:51:06