An invention which cancels out the noise of a dentist's drill could help people overcome their fear of a check-up, researchers say.

研究者称，一项发明能消除牙钻在使用时所发出的噪音，而这能帮助人们克服对牙科检查的恐惧。

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Check power tongs and spinning rope are on drill floor.

检查动力钳和尾绳是否在钻台上。

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The main Problems with designing the flexible shaft on a screw drill are strength check and interference calculation.

螺杆钻具挠性轴设计中的两个主要问题是强度校核和干涉量计算。

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They need to check both the rock and the drill are behaving as expected.

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Check out the Camden Sophisticated Sisters Drill Team website at camdensophisticatedsisters.org and see how to help.

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You know the drill if you want to find out more -- check out that source link below.

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