“beam diameter”的概念、定义、翻译、参考文献-科学参考

单词	beam diameter
释义	beam diameter [`bēm dī´am·ǝd·ǝr] ^OPTICS The distance between points on opposite sides of a light beam at which the power per unit area drops to 1/e (0.37) times its maximum value.
随便看	pseudo-oolith pseudo-operation pseudoparalysis pseudoparasite pseudoparkinsonism pseudoperfect number Pseudophoracea Pseudophyllidea pseudoplasmodium pseudoplastic pseudoplastic fluid pseudopodium pseudoporphyritic pseudorandom noise code pseudorandom numbers pseudoreduced compressibility pseudoreduced properties pseudo ripple mark pseudoscalar pseudoscalar coupling pseudoscalar meson pseudoscalar particle pseudoscope Pseudoscorpionida Pseudosphaeriales

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