“DDO photometry”的概念、定义、翻译、参考文献-科学参考

单词	DDO photometry
释义	DDO photometry Astronomy A system of intermediate-band photometry developed at the David Dunlap Observatory to study G and K giant stars and dwarfs of differing chemical composition. Seven filters are used, at wavelengths of 346, 381, 417, 426, 452, 489, and 513 nm.
随便看	Riemannian geometry Riemannian manifold Riemann integral Riemann-Lebesgue lemma Riemann mapping theorem Riemann sphere Riemann surface Riemann zeta function Riemann–Roch Theorem Rienzo, Cola di (1313–54) Riesz representation theorem Rietz, Henry Lewis (1875–1943) Rietz Lecturer riffle rift rift valley rig Rigel Righi–Leduc effect right right action right angle right-angled triangle right ascension right-censored

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