car·ri·er /ˈkærɪɚ/ 名詞
滑動裝置; 載波 CARR
邊( 頻 )帶抑制載波
載波 載子 載體
1. One who, or that which, carries or conveys; a messenger.
The air which is but . . . a carrier of the sounds. --Bacon.
2. One who is employed, or makes it his business, to carry goods for others for hire; a porter; a teamster.
The roads are crowded with carriers, laden with rich manufactures. --Swift.
3. Mach. That which drives or carries; as: (a) A piece which communicates to an object in a lathe the motion of the face plate; a lathe dog. (b) A spool holder or bobbin holder in a braiding machine. (c) A movable piece in magazine guns which transfers the cartridge to a position from which it can be thrust into the barrel.
Carrier pigeon Zool., a variety of the domestic pigeon used to convey letters from a distant point to to its home.
Carrier shell Zool., a univalve shell of the genus Phorus; -- so called because it fastens bits of stones and broken shells to its own shell, to such an extent as almost to conceal it.
Common carrier Law. See under Common, a.
n 1: someone whose employment involves carrying something; "the
bonds were transmitted by carrier" [syn: bearer, toter]
2: a self-propelled wheeled vehicle designed specifically to
carry something; "refrigerated carriers have
revolutionized the grocery business"
3: a large warship that carries planes and has a long flat deck
for take-offs and landings [syn: aircraft carrier, flattop,
attack aircraft carrier]
4: an inactive substance that is a vehicle for a radioactive
tracer of the same substance and that assists in its
recovery after some chemical reaction
5: a person or firm in the business of transporting people or
goods or messages [syn: common carrier]
6: a radio wave that can be modulated in order to transmit a
signal [syn: carrier wave]
7: a man who delivers the mail [syn: mailman, postman, mail
carrier, letter carrier]
8: a boy who delivers newspapers [syn: newsboy]
9: a person who has some pathogen to which he is immune but who
can pass it on to others [syn: immune carrier]
10: a rack attached to a vehicle; for carrying luggage or skis
or the like