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- Keywords drill sharpening complex helicoid mathematical modeling optimization; 钻头;刃磨;复杂螺旋面;数学建模;优化;
- Please sharpen the edge of this axe. 请把这把斧头的刃磨快。
- At six we were fallen in for drill. 六点钟我们站好队准备操练。
- The sound of that drill jangles horribly on the nerves. 那台钻机的声音响极了，十分刺耳。
- You'd better set a goal before you start the drill. 练习开始前，你最好设定一个目标。
- After a long drill he told the squad to fall out. 操练了好半天之后，他让这个班解散了。
- She had lots of drill in listening. 她在听力方面受过许多训练。
- This drill can bore through rock. 这台钻机能钻透岩石。
- The dentist's drill made a lot of noise. 牙钻发出很大的噪音。
- drill sharpening machine 钻头刃磨床
- What's the drill for claiming expenses? 费用报销的手续，是怎样的?
- My pencil is blunt, could you lend me a knife to sharpen it? 我的铅笔钝了，你能借我把刀子削一削吗？
- drill sharpening 钻头刃磨
- The class is chopped up into small groups for oral drill. 为进行口语训练，班级分成为几个小组。
- Exercise will give you a sharpening figure back. 锻炼可以还你一个健美的体格。
- The bad condition is sharpening now. 局势更加恶化了。
- The pupils filed out of the room during the fire drill. 在消防演习中，学生们排成纵队走出房间。
- He cut his finger while sharpening a pencil. 他削铅笔时把手指割破了。
- Chain saw files are for sharpening chain saws. 主要是为了削尖链锯。
- It's an electric drill with a range of different attachments. 这是一个带有各种配件的电钻。
