induction welding
41List of Russian people — The Millennium of Russia monument in Veliky Novgorod, featuring the statues and reliefs of the most celebrated people in the first 1000 years of Russian history …
42Numerical control — CNC redirects here. For other uses, see CNC (disambiguation). A CNC Turning Center …
43Case hardening — or surface hardening is the process of hardening the surface of a metal, often a low carbon steel, by infusing elements into the material s surface, forming a thin layer of a harder alloy. Case hardening is usually done after the part in question …
44Motor Homopolar — Un Generador Homopolar es un generador eléctrico de corriente continua que consta de un disco conductor que gira en un plano perpendicular a un campo magnético estático y uniforme. Una diferencia de potencial se origina entre el centro del disco… …
45Bottle — This article is about bottles in general. For baby bottles, see Baby bottle. Composite body, painted, and glazed bottle. Dated 16th century. From Iran. New York Metropolitan Museum of Art …
46Shelf life — This pack of diced pork says display until 7 May and use by 8 May …
47Spark-gap transmitter — A spark gap transmitter is a device for generating radio frequency electromagnetic waves. These devices served as the transmitters for most wireless telegraphy systems for the first three decades of radio (1887 ndash;1916) and the first… …
486061 aluminium alloy — 6061 is an aluminium alloy, with magnesium and silicon as the alloying elements. It has generally good mechanical properties and is heat treatable and weldable. It is one of the most common alloys of aluminum for general purpose use.It is… …
49Artificial pacemaker — Cardiac resynchronization therapy and CRT (Cardiac Resynchronization Therapy) redirect here. For the device termed a CRT D, see Implanted cardiac resynchronization device. For other uses, see Pacemaker (disambiguation). A pacemaker, scale in… …
50Nondestructive testing — or Non destructive testing (NDT) is a wide group of analysis techniques used in science and industry to evaluate the properties of a material, component or system without causing damage.[1] The terms Nondestructive examination (NDE),… …
