Definition of A-scan in English:

A-scan

noun ˈeɪskan

A radar or ultrasound scan in which the echo signals are used to generate a linear trace on an oscilloscope screen, the height of a peak being proportional to the strength of the echo; an image obtained by such a scan. Frequently attributive Compare B-scan.

Origin

1940s; earliest use found in British Patents. From A + scan, probably originally with reference to A as the first of a set, although later often reinterpreted as showing the initial letter of amplitude.

Definition of A-scan in US English:

A-scan

nounˈeɪskan

A radar or ultrasound scan in which the echo signals are used to generate a linear trace on an oscilloscope screen, the height of a peak being proportional to the strength of the echo; an image obtained by such a scan. Frequently attributive Compare B-scan.

Origin

1940s; earliest use found in British Patents. From A + scan, probably originally with reference to A as the first of a set, although later often reinterpreted as showing the initial letter of amplitude.

单词	A-scan
释义	Definition of A-scan in English: A-scan noun ˈeɪskan A radar or ultrasound scan in which the echo signals are used to generate a linear trace on an oscilloscope screen, the height of a peak being proportional to the strength of the echo; an image obtained by such a scan. Frequently attributive Compare B-scan. Origin 1940s; earliest use found in British Patents. From A + scan, probably originally with reference to A as the first of a set, although later often reinterpreted as showing the initial letter of amplitude. Definition of A-scan in US English: A-scan nounˈeɪskan A radar or ultrasound scan in which the echo signals are used to generate a linear trace on an oscilloscope screen, the height of a peak being proportional to the strength of the echo; an image obtained by such a scan. Frequently attributive Compare B-scan. Origin 1940s; earliest use found in British Patents. From A + scan, probably originally with reference to A as the first of a set, although later often reinterpreted as showing the initial letter of amplitude.
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