Bøger af Chen

Acupuncture in Latin means "sticking with the needle". In this title, each of the 409 important acupuncture points is presented with an anatomical graphic, an overview of the meridian, and a photo showing the needle placement.

"In electrical engineering, electric machine is a general term for machines using electromagnetic forces, such as electric motors, electric generators, and others. They are electromechanical energy converters: an electric motor converts electricity to mechanical power while an electric generator converts mechanical power to electricity. The moving parts in a machine can be rotating (rotating machines) or linear (linear machines). Besides motors and generators, a third category often included is transformers, which although they do not have any moving parts are also energy converters, changing the voltage level of an alternating current"--