钻头可以在飞机引擎部位打孔，帮助人们出行和货物运输；
Those drills may punch holes in airplane engine parts, and thus help produce transportation for people and goods.
钻孔：指在钻床或铣床上使用钻头对工件进行打孔的工艺过程。
Drilling: refers to the use of drilling or milling machine drill hole of the workpiece process.
观察钻头可打孔的深度。
观察钻头可打孔的深度。
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