flat-bottom hole in a sentence

1. Flat - bottomed hole equivalent
2. Method for ultrasonic testing of special forgings by an immersion technique using flat - bottomed holes as a reference standard
3. In order to make the mgb more easy - operating , ultrasonic testing simula - tion software was designed and developed , which has a good user - oriented interface and can simulate easily the inspection fields of planar transducer , focused transducer and angle beam transducer . it also can help inspectors analyze the inspection procedures and predict the feasibility of actual ultrasonic testing , then choose suitable inspection parameters . the side - drill hole and flat - bottom hole are commonly used in ultrasonic
4. It's difficult to find flat-bottom hole in a sentence.