abbr. tech.	Height Above Touch-Down	AT
		abbr.	atomic number	at. no.
		abbr.	atomic weight	at. wt
		abbr. comp.	Asynchronous Terminal Adapter	ATA
		abbr. comp.	Advanced Technology AT Attachment	ATA
		abbr.	ATA Package Interface	ATAPI
		abbr.	ATC	automatic tone correction
		abbr.	Advanced Technology Fighter	ATF
		abbr. astr.	Automated Telescope Facility	ATF
		abbr.	AppleTalk Filing Protocol	ATFP
		abbr.	Automatic Test Generation	ATG
		abbr.	Microsoft Active Template Library	ATL
		abbr.	Automated Trade Locator Assistance Network	ATLAS
		abbr.	atmosphere changes	atm chgs
		abbr.	atmosphere pressure	atm pr
		abbr.	Aerial Tuning Motor	ATM
		abbr. astr.	Amateur Telescope Makers' association	ATM
		abbr.	Adjustable Threshold MOS	ATMOS
		abbr.	Automated Temporary Roof Support	ATRS
		abbr.	American Television Society	ATS
		abbr.	Automatic Telephone System	ATS (Station)
		abbr.	American Test System	ATS
		abbr.	ampere turns	ats
		abbr.	Along-Track Scanning Radiometer	ATSR
		abbr.	attention	atten
		abbr. comp.	Security class rating of the TCSEC standard	AUD/D3
		abbr.	Area Usage Factor	AUF
		abbr. astr. lat.	Auriga	Aur (the Waggoner, the Charioteer, Возничий)
		abbr. astr.	Association of Universities for Research in Astronomy	AURA
		abbr.	Army of the United States	AUS
		abbr. geogr.	Austria	Aust.
		abbr. geogr.	Australia	Austral.
		abbr.	avoirdupois pound	av lb
		abbr.	Advanced Very High Resolution Radiometer	AVHIR
		abbr.	Anti Viral Toolkit Pro	AVP
		abbr.	Automatic Volume Recognition	AVR
		abbr.	American Wire Grade	AWG
		abbr. phys.	Auto-Wave Process	AWP
		abbr. geogr.	AZ	Arizona
		abbr. geogr.	Azerbaijan	Azer.
		abbr. med.	AZT	zidovudine
		abbr.	bridging amplifier	b.a.
		abbr.	bread and breakfast	b and b
		abbr.	bulk density	b.d.
		abbr.	back electromotive force	b.e.m.f.
		abbr.	band filter	b.f.
		abbr.	beat frequency	b.f.
		abbr.	blast furnace	b.f.
		abbr.	by-pass	b.p.
		abbr.	boiling range	b.r.
		abbr.	bell wire	b.w.
		abbr.	B	board
		abbr.	British Thermal Unit	B
		abbr.	B	baggage
		abbr.	British Merchant Navy	B.M.N.
		abbr.	British Mean Time	B.M.T.
		abbr.	British Summer Time	B.S.T.
		abbr.	British Winter Time	B.W.T.
		abbr.	bill of collection	b/c
		abbr.	barrels per day	b/d
		abbr.	brought forward	b/f
		abbr.	Binary Addition	BA
		abbr.	Beam Approach	BA
		abbr.	Bell Alarm	BA
		abbr.	Blind Approach	BA
		abbr.	Bridging Amplifier	BA
		abbr.	British Association thread	BA
		abbr. tech.	Barrels of Acid	BA
		abbr. tech.	Bayard-Alpert gauge	BA
		abbr.	British Atomic Energy Authority	BAEA
		abbr. geogr.	Bahamas	Bah.
		abbr. geogr.	Bahrain	Bahr.
		abbr.	balanced-unbalanced transformer	balun
		abbr. geogr.	Bangladesh	Bangla.
		abbr. geogr.	Barbados	Barb.
		abbr.	British Association Screw Gauge	BASG
		abbr.	Beginner's All-purpose Symbolic Introduction Code	BASIC
		abbr.	battery charging	bat chg
		abbr.	BB	best-best
		abbr.	BB	double best
		abbr. econ.	Bachelor of Business Administration	BBA
		abbr.	Better Business Bureau	BBB
		abbr. med.	BBB	bundle branch block
		abbr.	Block Check Character	BBC
		abbr.	Begin Bracket Indicator	BBI
		abbr.	barrels	bbl
		abbr.	barrels per day	bbls/day
		abbr.	Basic Block Protocol	BBP
		abbr.	British Branch of Radiation Laboratory	BBRL
		abbr. cryptogr.	BBS generator	BBS (stands for authors L.Blum, M.Blum and M.Shub)
		abbr. astr.	Big Bear Solar Observatory	BBSO
		abbr. comp.	Broad-Band Technical Advisory Group	BBTAG
		abbr.	between centres	bc
		abbr. comp.	Blind Carbon Copy - a copy of a message, sent to somebody without informing the primary addressee.	BCC
		abbr. phys.	Body-Centred Cubic Lattice	BCC
		abbr. comp.	Business Components Gallery	BCG
		abbr. cryptogr.	Bose-Chaudhuri-Hocquenghem codes	BCH
		abbr. comp.	Broad-Band Communication Network	BCN
		abbr. comp.	Basic Catalogue Structure	BCS
		abbr. econ.	Bachelor of Commercial Science	BCS

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66