Based on the theoretical analysis, a new type of blade bit was invented. And this kind of bit combines the advantages of PDC bits and drag bits. And a series of field experiments were performed.
在理论分析的基础上，综合PD C钻头和刮刀钻头的优点，设计了一种新型的刮刀钻头，并进行了现场试验。
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。
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