Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Curve of the diameter of entrance changing with the peak voltage: (a) curve of the diameter of entrance changing with the peak voltage; (b) curve of the diameter of entrance changing with the pulse width; (c) curve of the diameter of entrance and taper of holes changing with the rotating speed; and (d) curve of the maximum feed rate changing with the rotating speed.
