Asymmetrical blade layout and curved blades are combined to increase bit stability.XL bits are designed for longer life in tough or interbedded applications.是什么意思_Asymmetrical blade layout and curved blades are combined to increase bit stability.XL bits are designed for longer life in tough or interbedded applications.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句