DLW can stand for:
* the
Delaware, Lackawanna and Western Railroad in the United States
* the
Delhi Waveriders, a field hockey franchise based in Delhi
*
Doubly labeled water
Doubly labeled water is water in which both the hydrogen and the oxygen have been partly or completely replaced (i.e. ''labeled'') with an uncommon isotope of these elements for tracing purposes.
In practice, for both practical and safety reasons ...
, water made of uncommon isotopes, used for tracing purposes
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