| 单词 |
electromagnetic focusing |
| 释义 |
electromagnetic focusing electromagnetic focusing[i¦lek·trō·mag′ned·ik ′fō·kəs·iŋ] (electronics) Focusing the electron beam in a telelvision picture tube by means of a magnetic field parallel to the beam; the field is produced by sending an adjustable value of direct current through a focusing coil mounted on the neck of the tube. |
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