“double-beam spectrophotometer”的概念、定义、翻译、参考文献-科学参考

单词	double-beam spectrophotometer
释义	double-beam spectrophotometer [¦dǝb·ǝl ¦bēm spek·trō·fǝ`täm·ǝd·ǝr] ^SPECTROSCOPY An instrument that uses a photoelectric circuit to measure the difference in absorption when two closely related wavelengths of light are passed through the same medium.
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