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ступенчатое сверло stresses
automat.	dual-cut drill; multidiameter drill; multiple-diameter drill; step drill; step-drill; stepped drill
construct.	vari-bit
dentist.	stepdrill (MichaelBurov); stepdrill bit (MichaelBurov); step drill bit (MichaelBurov)
ступенчатое сверло Twist
dentist.	Twist Step Drill (MichaelBurov); step drill bit (MichaelBurov); twist drill bit (MichaelBurov); stepped twist drill (MichaelBurov); stepped twist drill bit (MichaelBurov); twist step drill bit (MichaelBurov)

ступенчатое сверло: 10 phrases in 3 subjects

Automated equipment	1
Dentistry	8
Mechanic engineering	1