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General

blower-coil unit

In an HVAC system, a blower that moves an airstream across cooling coils, heating coils, and through an air filter.

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General

blow count

1. The number of blows required to drive an object into soil. 2. In soil borings, the number of blows

General

blowback

A characteristic of a safety valve; the difference between the pressure at which it opens and the pressure at which

General

blow

1. See throw, 1. 2. The eruption of water and sand inside a cofferdam, causing flooding.

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General

bloom

1. The formation of a thin film of material on the surface of paint causing it to appear lower in

General

blockwork

1. Masonry of concrete block and mortar. 2. In timber and log construction, a technique for notching the corners of

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