| 单词 | electron beam |
| 释义 | electron beam (once / 193760 pages) n WORD FAMILY electron beam: electron beams USAGE EXAMPLESThe additive-manufacturing process uses lasers or electron beams to weld minute alloy particles that start as loose powder. Wall Street Journal(Nov 29, 2016) An electron beam as fine as an atom is scanned through the specimen to probe its structure3. Nature(Nov 21, 2016) In this arrangement the laser or electron beams would melt the tips of the wires. Economist(Nov 02, 2016) n a group of nearly parallel lines of electromagnetic radiation Syn|Hypo|Hyper beam, ray cathode ray a beam of electrons emitted by the cathode of an electrical discharge tube particle beama collimated flow of particles (atoms or electrons or molecules) ion beam, ionic beama beam of ions moving in the same direction at the same speed electromagnetic radiation, electromagnetic wave, nonparticulate radiation radiation consisting of waves of energy associated with electric and magnetic fields resulting from the acceleration of an electric charge |
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