| vacuum |
the absence of matter void: an empty area or space; "the huge desert voids"; "the emptiness of outer space"; "without their support he'll be ruling in a vacuum" a region that is devoid of matter an electrical home appliance that cleans by suction clean with a vacuum cleaner; "vacuum the carpets"
출처: wordnet.princeton.edu/perl/webwn
|
|---|---|
| vacuum aspiration |
suction curettage: a method of induced abortion; prior to the 14th week of gestation the embryo and placenta are removed by applying suction to the dilated cervix
출처: wordnet.princeton.edu/perl/webwn
|
| vacuum tube |
tube: electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope
출처: wordnet.princeton.edu/perl/webwn
|
| vacuum tube |
a glass tube from which the air has been exhausted to a high degree of vacuum.
출처: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
|
| vacuum tube |
In electronics, a vacuum tube (American English) or (thermionic) valve (British English) is a device generally used to amplify a signal. Once used in most electronic devices, vacuum tubes are now used only in specialized applications. For most purposes, the vacuum tube has been replaced by the much smaller and less expensive transistor, either as a discrete device or in an integrated circuit. ...
출처: en.wikipedia.org/wiki/Vacuum_tube
|