tapered step-core bit

基本解释锥形塔式岩芯钻头

网络释义

1)tapered step-core bit,锥形塔式岩芯钻头2)core drill bit,岩芯钻头3)taper bit,锥形钻头4)tapered core bit,锥形取芯钻5)sprayed drill,棱锥形钻头6)double-cone bit,双锥形钻头

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短语索引：: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

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