german institute for standardization
21Audio power — Sound measurements Sound pressure p, SPL Particle velocity v, SVL Particle displacement ξ Sound intensity I, SIL Sound power Pac Sound power level SWL Sound energy Sound energy density …
22Gas pycnometer — A gas pycnometer, a type of pycnometer, is a laboratory device used for measuring the density or more accurately the volume of solids, be they regularly shaped, porous or non porous, monolithic, powdered, granular or in some way comminuted,… …
23DIN — Photog. a designation, originating in Germany, of the speed of a particular film emulsion. [ < G D(eutsche) I(ndustrie) N(ormen) German industrial standards (later construed as Das ist Norm that is (the) standard), registered mark of the German… …
24DIN 1530 — is a standard by the German Institute for Standardization for ejector pins used in injection moulds. Ejector pins are used to eject plastic or alloyed products from the mould after solidification. This standards or measurement related article is… …
25Perm (unit) — A perm is a unit of permeance or water vapor transmission given a certain differential in partial pressures on either side of a material or membrane.Definitions;US perm:The US perm is defined as 1 grain of water vapor per hour, per square foot,… …
26Keyboard layout — QWERTY keyboard on a laptop. A keyboard layout is any specific mechanical, visual, or functional arrangement of the keys, legends, or key–meaning associations (respectively) of a computer, typewriter, or other typographic keyboard. Mechanical… …
27Conveyor chain — general layout A chain conveyor for mining use …
28Biological warfare — For the use of biological agents by terrorists, see bioterrorism. Weapons of mass destruction …
29Artillery — For other uses of the term, see Artillery (disambiguation). Warfare Military history Eras Prehistoric Ancient …
30Medical record — For the New York journal published by the Washington Institute of Medicine, see Medical Record (journal). For the BBC Radio 4 medical programme, see Case Notes (radio show). The terms medical record, health record, and medical chart are used… …
