However, the incremental conductance method can produce oscillations and can perform erratically under rapidly changing atmospheric conditions.

In January a missile performed erratically when it was nearly three minutes into flight and had to be destroyed over the Atlantic.

All that the years of lessons have accomplished is to increase the kinds of shots I perform erratically.

Recently, rudders on some 737's have been found to perform erratically now and then.

And with the team performing erratically, he is likely moving closer to pushing for change.

Goalkeeper Jim Leighton had been performing erratically for much of the 1989-90 season, and his form in the FA Cup final was no different.

He returned to Penn as captain of the team in the fall and again performed erratically.

He read widely in high school but performed erratically in the classroom and was in no position to expect entry to college.

In addition, two science instruments are performing erratically.

He stood there, wobbling uneasily; the effectors for his limbs were performing erratically.