advance of tool是什么意思

用法例句

Research of diamond weak combined bit for high geo-stress stratum drilling;

弱包镶金刚石钻头在高地应力地层中的应用研究

Research into the new electroplating weak-holding diamond bits;

新型电镀弱包镶金刚石钻头研制

Research,development and application of the series core drilling bit for uranium exploration;

铀矿勘查岩心钻探系列钻头的研制、开发与应用

Research of the Edge Grinding with the Simplified Conical Drill;

简化钻头圆锥面刃磨法的研究

Dynamic Model of Drill during Vibrational Drilling;

振动钻削时钻头的动力学模型

A Forecasting System for Wear of Drill;

基于电流信号钻头磨损状态预报系统