air lockn.

Brit.

/ˈɛː lɒk/, U.S.

/ˈɛr ˌlɑk/

Origin: Formed within English, by compounding. Etymons: air n.¹, lock n.²

Etymology: < air n.¹ + lock n.²

1. An airtight chamber with parallel sets of doors which permits movement between areas at different pressures, most often used for passage between atmospheric pressure and chambers or environments containing compressed air, water (e.g. outside a submarine), or a vacuum (e.g. outside a spacecraft); cf. lock n.² 14. Also: a similar chamber or compartment controlling movement into and out of an area enclosed for reasons of security, quarantine, etc.

ΘΚΠ

the world > matter > gas > air > [noun] > air-pressure > chamber between atmospheric and other

air lock1840

lock1840

recompression chamber1907

recompression lock1911

decompression chamber1932

manlock1940

1840 Mechanic & Chemist 19 Dec. 282/2 a l is an air-lock [in a submarine], into which the men enter to pass up to d a; d a, rooms where air at the common density is heated, and where the hands refresh themselves.

1851 Sci. Amer. 6 Dec. 94/3 Two cast-iron chambers, D shaped in plan, with a sectional area of 6 square feet, appropriately called air locks, projecting 2 feet 6 inches above the top of the cylinder.

1857 Brit. Almanac Compan. 99 Each cylinder..is filled with compressed air, by which it is kept free from water, and by means of chambers at the top furnished with doors or valves, on the principle of the canal lock, and called ‘air-locks’.

1877 Encycl. Brit. VI. 63/1 A cylinder of wrought iron, within which a tubular chamber, provided with doors above and below, known as an air-lock.

1926 Blackwood's Mag. Sept. 322/1 A diver could lie inside a great steel cylinder undergoing compression and have tea passed in to him through an airlock.

1951 A. C. Clarke Sands of Mars ii. 12 Help him through the airlock when the tender couples up.

1969 A. McCaffrey Ship who Sang 20 Jennan broke out spacesuits to the three who would have to remain with him in the airlock.

1996 T. Clancy Executive Orders xxvi. 350 The armed guards led them off to the air-lock doors, inside of which were the army medics.

2001 Vanity Fair (N.Y.) Dec. 197/1 Behind the multi-layered high-security doors and air locks of the agency's Biohazard Level-4 Laboratory were freezers full of such microscopic killers as Ebola and assorted other hemorrhagic-fever viruses.

2. A stoppage of the flow of liquid in a pump or pipe by a bubble of air.

ΘΚΠ

the world > movement > absence of movement > [noun] > state of cessation of movement > arrest of motion > by air bubble

air lock1889

1889 Science 29 Nov. 377/2 As will be seen, the air-pump is vertical and single-acting; and this the builders believe to be the best form to avoid air-locks.

1920 Flight 12 219/1 The avoidance of air-locks in pipe systems.

1927 D. L. Sayers Unnatural Death xi. 132 ‘Blew through the filler-cap,’ said his lordship with a grin. ‘Air-lock in the feed, old son, that's all.’

1957 S. J. Perelman in Los Angeles Times 7 Apr. 258 I had to recruit bystanders to rock it back and forth to overcome the air-lock.

1985 D. Holloway Which? Bk. Plumbing & Central Heating ii. 34/2 Gatevalves are usually fitted with wheel handles rather than cross-head handles and must be kept fully open to avoid airlocks.

1992 S. Sigfusson Sigfusson's Roads xvii. 130 As we came abreast of the town of Gimli, the engine died—probably because of an airlock in the fuel line.

2005 C. Tudge Secret Life Trees xi. 256 Even as things are, the threads of water may sometimes break—an accident known as ‘cavitation’—leaving a space in the vessel that a plumber would call an airlock, and a surgeon would call an embolus.

Derivatives

ˈair ˌlocking n. the formation of an air lock (sense 2).

ΚΠ

1907 C. Beadle Chapters on Papermaking II. xii. 142 A little consideration will show that the 'blowing' is due to air-locking, and some provision must be made either to prevent the air from reaching this spot or removing it.

1936 Aircraft Engin. Nov. 321/1 Airlocking was studied in the laboratory by observing the behaviour of a fuel-air system in glass pipes.

1956 Times 2 Oct. p. v./3 We were most careful in the orderly arrangement of steam pipes..to avoid air-locking.

2001 S. Roaf et al. Ecohouse (2002) ix. 212 Ensure that there is a pressure release valve at the highest point of the system to prevent air-locking in the system that may reduce its subsequent efficiency.

This entry has been updated (OED Third Edition, June 2008; most recently modified version published online December 2021).

单词	air lock
释义	air lockn. Brit. /ˈɛː lɒk/, U.S. /ˈɛr ˌlɑk/ Origin: Formed within English, by compounding. Etymons: air n.¹, lock n.² Etymology: < air n.¹ + lock n.² 1. An airtight chamber with parallel sets of doors which permits movement between areas at different pressures, most often used for passage between atmospheric pressure and chambers or environments containing compressed air, water (e.g. outside a submarine), or a vacuum (e.g. outside a spacecraft); cf. lock n.² 14. Also: a similar chamber or compartment controlling movement into and out of an area enclosed for reasons of security, quarantine, etc. ΘΚΠ the world > matter > gas > air > [noun] > air-pressure > chamber between atmospheric and other air lock1840 lock1840 recompression chamber1907 recompression lock1911 decompression chamber1932 manlock1940 1840 Mechanic & Chemist 19 Dec. 282/2 a l is an air-lock [in a submarine], into which the men enter to pass up to d a; d a, rooms where air at the common density is heated, and where the hands refresh themselves. 1851 Sci. Amer. 6 Dec. 94/3 Two cast-iron chambers, D shaped in plan, with a sectional area of 6 square feet, appropriately called air locks, projecting 2 feet 6 inches above the top of the cylinder. 1857 Brit. Almanac Compan. 99 Each cylinder..is filled with compressed air, by which it is kept free from water, and by means of chambers at the top furnished with doors or valves, on the principle of the canal lock, and called ‘air-locks’. 1877 Encycl. Brit. VI. 63/1 A cylinder of wrought iron, within which a tubular chamber, provided with doors above and below, known as an air-lock. 1926 Blackwood's Mag. Sept. 322/1 A diver could lie inside a great steel cylinder undergoing compression and have tea passed in to him through an airlock. 1951 A. C. Clarke Sands of Mars ii. 12 Help him through the airlock when the tender couples up. 1969 A. McCaffrey Ship who Sang 20 Jennan broke out spacesuits to the three who would have to remain with him in the airlock. 1996 T. Clancy Executive Orders xxvi. 350 The armed guards led them off to the air-lock doors, inside of which were the army medics. 2001 Vanity Fair (N.Y.) Dec. 197/1 Behind the multi-layered high-security doors and air locks of the agency's Biohazard Level-4 Laboratory were freezers full of such microscopic killers as Ebola and assorted other hemorrhagic-fever viruses. 2. A stoppage of the flow of liquid in a pump or pipe by a bubble of air. ΘΚΠ the world > movement > absence of movement > [noun] > state of cessation of movement > arrest of motion > by air bubble air lock1889 1889 Science 29 Nov. 377/2 As will be seen, the air-pump is vertical and single-acting; and this the builders believe to be the best form to avoid air-locks. 1920 Flight 12 219/1 The avoidance of air-locks in pipe systems. 1927 D. L. Sayers Unnatural Death xi. 132 ‘Blew through the filler-cap,’ said his lordship with a grin. ‘Air-lock in the feed, old son, that's all.’ 1957 S. J. Perelman in Los Angeles Times 7 Apr. 258 I had to recruit bystanders to rock it back and forth to overcome the air-lock. 1985 D. Holloway Which? Bk. Plumbing & Central Heating ii. 34/2 Gatevalves are usually fitted with wheel handles rather than cross-head handles and must be kept fully open to avoid airlocks. 1992 S. Sigfusson Sigfusson's Roads xvii. 130 As we came abreast of the town of Gimli, the engine died—probably because of an airlock in the fuel line. 2005 C. Tudge Secret Life Trees xi. 256 Even as things are, the threads of water may sometimes break—an accident known as ‘cavitation’—leaving a space in the vessel that a plumber would call an airlock, and a surgeon would call an embolus. Derivatives ˈair ˌlocking n. the formation of an air lock (sense 2). ΚΠ 1907 C. Beadle Chapters on Papermaking II. xii. 142 A little consideration will show that the 'blowing' is due to air-locking, and some provision must be made either to prevent the air from reaching this spot or removing it. 1936 Aircraft Engin. Nov. 321/1 Airlocking was studied in the laboratory by observing the behaviour of a fuel-air system in glass pipes. 1956 Times 2 Oct. p. v./3 We were most careful in the orderly arrangement of steam pipes..to avoid air-locking. 2001 S. Roaf et al. Ecohouse (2002) ix. 212 Ensure that there is a pressure release valve at the highest point of the system to prevent air-locking in the system that may reduce its subsequent efficiency. This entry has been updated (OED Third Edition, June 2008; most recently modified version published online December 2021). < n.1840
随便看	indefatigablenesses indefatigably indefatigation indefeasibilities indefeasibility indefeasible indefeasibleness indefeasibly indefeatability indefeatable indefectibilities indefectibility indefectible indefectibly indefective indefectively indefectuous indefectuousness indefendable indefendible indefensibilities indefensibility indefensible indefensibleness indefensiblenesses