首页 / 官方藏书 / The Telephone / An Account of the Phenomena of Electricity, Magnetism, and Sound, as Involved in Its Action / FORM OF A COMPOUND SOUND-WAVE IN AIR.

FORM OF A COMPOUND SOUND-WAVE IN AIR.

The Telephone / An Account of the Phenomena of Electricity, Magnetism, and Sound, as Involved in Its Action · A. E. Dolbear · 第 2 / 3 章