Whenever you need to change a blade or bit on a power tool, always disconnect the electricity to the power tool before even beginning the blade change.
你要更换刀具或给电动工具换位之前，都要切断电源。
Based on the inspection and analysis to the imported wear resisting components, the cutting blade and end bit of model D9L bulldozer were made using air cooled cast steel.
在检测分析进口抗磨件基础上，采用空冷贝氏体铸钢制造了D9L推土机铲刃、铲角。
Based on the formation lithology characteristics, the PDC bit was optimized from such aspects as the composite block, blade geometry, cutter model, and cutter mechanics balance, etc.
针对山前构造的地层岩性特征，从复合片、刀翼形状、齿型、切削齿力平衡等方面设计和改进了PD C钻头。
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