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Glossary

down-feed system

1. A piping arrangement for a heating (or air-conditioning or refrigeration) system, in which the heating (or cooling) fluid is

Glossary

downdraft

Brit. downdraught 1. A downward current of air in a chimney or flue, often carrying smoke with it. 2. A

Glossary

down conductor

The vertical portion of an electric conductor used in a lightning protection system to provide a lightning current path from

Glossary

dowel plate

A hardened steel plate containing holes of various diameters; used to cut dowels by driving pegs through the holes to

Glossary

dowel pin

1.A dowel. 2. A metal pin having a sharpened or deformed end used to fasten mortise-and-tenon joints.

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