| 单词 | b-scan |
| 释义 | > as lemmasB-scan B-scan n. a radar or ultrasound scan in which the echo signals are used to modify the brightness of a spot on an oscilloscope screen, so that a two-dimensional cross-sectional image can be built up from multiple scans; an image obtained by such a scan; cf. A-scan n. ΘΚΠ the world > health and disease > healing > diagnosis or prognosis > radiography or radiology > scanning > [noun] > image or record produced by B-scan1947 scintillograph1950 scintigram1952 scan1953 scintiscan1954 photoscan1956 scintigraph1957 scintillogram1958 the world > health and disease > healing > diagnosis or prognosis > radiography or radiology > ultrasonography > [noun] > record B-scan1947 sonogram1950 sonograph1952 ultrasonogram1958 ultrasonograph1975 1947 Brit. Patent 592,367 3/2 Figure 2 is a representation of a typical radar screen showing a B-scan display. 1960 A. M. Peterson in D. H. Menzel Radio Noise Spectrum ii. 27 (caption) Range-azimuth display, or B-scan, of an auroral echo... Frequency, 400 Mc/s; antenna elevation, 4°. 1978 R. M. Lunt Handbk. Ultrasonic B-Scanning Med. iii. 27 B-scans are often carried out to confirm the presence and size of a palpated mass. 2006 H. Zhang & J. Senkara Resistance Welding vi. 212 A new technique using ultrasonic B-scan has been developed in recent years for nondestructive evaluation of resistance spot welds. < as lemmas |
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