青云翻译

As early as 1821, Faraday invented called arc lamp lights. This lamp filament with carbon rods

As early as 1821, Faraday had invented something called the arc lamp lights. This electric carbon rods for filament

As early as in 1821, Faraday invented one kind to be called the electric arc lamp the electric lamp.This kind of electric lamp makes the filament with the carbon rod

As early as in 1821, Faraday invented a process called the electric arc light. This lamp with a carbon rods for filament

As early as 1821, Faraday had invented something called the arc lamp lights. This electric carbon rods for filament