2-directional operation
1Directional Infrared Counter Measures — (DIRCM) is a system produced by Elbit Systems, Northrop Grumman, ITT Corporation and BAE Systems to protect aircraft from infrared homing ( heat seeking ) man portable missiles. It is a lightweight, compact system designed to provide mission… …
2Operation Logic Bomb — Cover art of Operation Logic Bomb Developer(s) Jaleco USA, Inc …
3Directional boring — A small directional boring unit in action Directional boring, commonly called horizontal directional drilling or HDD, is a steerable trenchless method of installing underground pipes, conduits and cables in a shallow arc along a prescribed bore… …
4Directional drilling — A horizontal directional drill in operation Directional drilling (or slant drilling) is the practice of drilling non vertical wells. It can be broken down into three main groups: Oilfield Directional Drilling, Utility Installation Directional… …
5Operation Biting — Coordinates: 49°40′16.06″N 0°09′42.60″E / 49.6711278°N 0.161833°E / 49.6711278; 0.161833 …
6Directional Recoil Identification From Tracks — The DRIFT IIb Detector removed from the vacuum vessel for maintenance. The Directional Recoil Identification From Tracks (DRIFT) detector is a low pressure negative ion time projection chamber (NITPC) designed to detect weakly interacting massive …
7Power dividers and directional couplers — A 10 dB 1.7–2.2 GHz directional coupler. From left to right: input, coupled, isolated (terminated with a load), and transmitted port …
8Non-directional beacon — Radio Tower of NKR Leimen Ochsenbach, Germany This symbol denotes an NDB on an aeronaut …
9Automatic Block Signal — Basic Automatic Block Signals = Automatic Block Signal, or ABS, systems consist of a series of signals that govern blocks of track between the signals. The signals are automatically activated by the conditions of the block beyond the signal.… …
10Application of railway signals — Semaphore stop signals protecting the convergence of two tracks into one The application of railway signals on a rail layout is determined by various factors, principally the location of points of potential conflict, as well as the speed and… …
