sprayed boring tool ; sprayed drill
... 冷钢钻粒钻机：chilled shot drill 棱锥形钻头：sprayed boring tool 累计粒度曲线：cumulative grading curve ...
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... sprayed boring tool 棱锥形钻头 sprayed drill 棱锥形钻头 sprayer 喷雾器 ...
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