单词	stepper
释义	stepper /ˈstɛpə / noun 1An electric motor or other device which moves or rotates in a series of small discrete steps.The two-sided timing belt is driven by a stepper motor in synchronism with the turret.... The plungers of the pumps are moved via cams by stepper motors which swing or rotate back and forth within a certain angular range. Spectra were acquired before the stepper motor began moving, throughout the 6-blanch cycle, and after the blanch cycle was completed. 2A portable block used in step aerobics.
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