Solenoid

(noun.) a coil of wire around an iron core; becomes a magnet when current passes through the coil.

安托万整理

• Such an arrangement of wire is known as a helix or solenoid, and is capable of lifting or pulling larger and more numerous filings and even good-sized pieces of iron, such as tacks. 伯莎M.克拉克. 科学通论.
• It shows a little solenoid arrangement, with one end of the plunger attached to the diaphragm of a speaking or resonating chamber. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.

以利沙整理