XRL may refer to:
*
Guangzhou–Shenzhen–Hong Kong Express Rail Link
Guangzhou–Shenzhen–Hong Kong Express Rail Link (XRL), also known as “Guangshengang XRL” (officially Beijing–Guangzhou–Shenzhen–Hong Kong high-speed railway, Guangzhou–Shenzhen–Hong Kong section), is a high-speed railway line tha ...
, a high-speed railway line connecting Beijing and Hong Kong
*
Hong Kong West Kowloon railway station
West Kowloon station (abbreviated WEK), also known as Hong Kong West Kowloon, is the southern terminus of and the only station on the Hong Kong section of the Guangzhou–Shenzhen–Hong Kong Express Rail Link (HSR). The station con ...
, Hong Kong, Immigration Department station code XRL
*
X-ray laser
An X-ray laser is a device that uses stimulated emission to generate or amplify electromagnetic radiation in the near X-ray or extreme ultraviolet region of the spectrum, that is, usually on the order of several tens of nanometers (nm) wavelength ...
, a device that uses stimulated emission (The acronym can refer to these in either in the general sense, or as a part of the
Strategic Defense Initiative
The Strategic Defense Initiative (SDI), derisively nicknamed the "''Star Wars'' program", was a proposed missile defense system intended to protect the United States from attack by ballistic strategic nuclear weapons (intercontinental ballistic ...
,
Project Excalibur
Project Excalibur was a Lawrence Livermore National Laboratory (LLNL) Cold Warera research program to develop an X-ray laser system as a ballistic missile defense (BMD) for the United States. The concept involved packing large numbers of expendab ...
)
{{disambiguation