thin-wall pipe
71French drain — A French drain, drain tile, or land drain is a ditch filled with gravel or rock that redirects surface and ground water away from an area. French drains are common drainage systems, primarily used to prevent ground and surface water from… …
72light — light1 lightful, adj. lightfully, adv. /luyt/, n., adj., lighter, lightest, v., lighted or lit, lighting. n. 1. something that makes things visible or affords illumination: All colors depend on light. 2. Physics …
73wind instrument — /wind/ a musical instrument sounded by the breath or other air current, as the trumpet, trombone, clarinet, or flute. [1575 85] * * * ▪ music Introduction any musical instrument that uses air as the primary vibrating medium for the… …
74petroleum production — Introduction recovery of crude oil and, often, associated natural gas from the Earth. petroleum is a naturally occurring hydrocarbon material that is believed to have formed in deep sedimentary (sedimentary rock) beds from animal and …
75Industrial radiography — is the use of ionizing radiation to view objects in a way that cannot be seen otherwise. It is not to be confused with the use of ionizing radiation to change or modify objects; radiography s purpose is strictly viewing. Industrial radiography… …
76printing — /prin ting/, n. 1. the art, process, or business of producing books, newspapers, etc., by impression from movable types, plates, etc. 2. the act of a person or thing that prints. 3. words, symbols, etc., in printed form. 4. printed material. 5.… …
77Media and Publishing — ▪ 2007 Introduction The Frankfurt Book Fair enjoyed a record number of exhibitors, and the distribution of free newspapers surged. TV broadcasters experimented with ways of engaging their audience via the Internet; mobile TV grew; magazine… …
78List of Deltora Quest characters — The Deltora series features a wide line of characters, both important and minor. The series also features many different monsters and creatures that appeared in all of the many different books. This article is a list of the many different… …
79Pressure vessel — Vertical pressure vessels installed in a structure A pressure vessel is a closed container designed to hold gases or liquids at a pressure substantially different from the ambient pressure. The pressure differential is dangerous and many fatal… …
80laminar flow — Hydraul., Mech. the flow of a viscous fluid in which particles of the fluid move in parallel layers, each of which has a constant velocity but is in motion relative to its neighboring layers. [1945 50] * * * Fluid flow in which the fluid travels… …
