“straight-side(d) core bit”的概念、定义、翻译、参考文献-科学参考

单词	straight-side(d) core bit
释义	straight-side(d) core bit 直孔空心钻头
随便看	control form control format control format item control function control gap control gate control gear control generator control graduating spring control grid control-grid aperture control-grid bias control-grid plate transconductance control group control handle control hand picking control handwheel control heading control heading group control hierarchy control hole control horn control house control hysteresis control identifier

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