pressure-gas welding
51Laser cutting — process on a sheet of steel. CAD (top) and stainless steel laser cut part (bottom) Laser cutting is a technology that uses a laser to cut materials, an …
52List of United States Navy ratings — From left to right: a Special Warfare Operator 1st Class and a Boatswain s Mate 2nd Class. United States Navy ratings are general occupations that consist of specific skills and abilities. Each naval rating has its own specialty badge, which is… …
53Liquid air — For the automobile, see Liquid Air. Liquid air is air that has been cooled to very low temperatures so that it has condensed to a liquid. It must be kept in a Dewar flask at room temperature. Liquid air can absorb heat rapidly and revert to its… …
54College of Engineering and Technology, Bhubaneswar — COLLEGE OF ENGINEERING AND TECHNOLOGY, BHUBANESHWAR Motto Karmanewa Hi Sansidhim Established 1981 Type Education and research institution …
55Fuel cell — For other uses, see Fuel cell (disambiguation). Demonstration model of a direct methanol fuel cell. The actual fuel cell stack is the layered cube shape in the center of the image A fuel cell is a device that converts the chemical energy from a… …
56Screw thread — Internal and external threads illustrated using a common nut and bolt. The screw and nut pair can be used to convert torque into linear force. As the screw (or bolt) is rotated, the screw moves along its axis through the fixed nut, or the non… …
57Potassium chloride — This article is about the chemical compound. For other uses, see KCL. Potassium chloride …
58Carbon dioxide — Carbon dioxide …
59building construction — Techniques and industry involved in the assembly and erection of structures. Early humans built primarily for shelter, using simple methods. Building materials came from the land, and fabrication was dictated by the limits of the materials and… …
60Oxygen — This article is about the chemical element and its most stable form, O2 or dioxygen. For other forms of this element, see Allotropes of oxygen. For other uses, see Oxygen (disambiguation). nitrogen ← oxygen → fluorine ↑ O ↓ …
