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block system
(redirected from block systems)

    Also found in: Encyclopedia 0.02 sec.
block system
n.
A system for controlling and safeguarding the flow of railway trains in which track is divided into blocks, each controlled by automatic signals.
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Railways installed centralized traffic control and auto block systems in 1970 and 1993 on main line from Karachi to Kotri but most of the existing systems are very old and obsolete, an official of Pakistan Railways said.
Saudi bank consents to finance replacement of railway signalling ... by Balochistan Times (Baluchistan Province, Pakistan)
The standards include test methods, material specifications, practices, and guides and relate to manufactured materials such as mulches and tackifiers, biodegradable blankets, turf reinforcement mats, sediment retention and filtration devices, gabions, grout-filled mats, geotextiles, and articulating concrete block systems, as well as natural materials including soil, rock riprap, and willows and grasses.
ASTM standards on erosion and sediment control technology, 2d ed by SciTech Book News
Only 8 mm wide, the 1180 fits Phoenix Contact, WACO, Entrelac and other block systems without consuming valuable space.
Circuit breakers by Designfax
 
 
 
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