n.timepiece that indicates the daylight hours by the shadow that the gnomon casts on a calibrated dial
sundials例句
SUNDIALS On sundials, springs, and atoms. From sundials to atomic clocks. Greek and Roman sundials FromSundialstoAtomicClocks, UnderstandingTimeandFrequency From Sundials to Atomic Clocks: Understanding Time and Frequency SUNDIALS: Suite of nonlinear and differential/algebraic equation solvers Rsundials: Suite of Nonlinear Differential Algebraic Equations Solvers in R Cvodes, the sensitivity-enabled ode solver in sundials The Origins of al-Bīrūnī‘s “Method of the Zijes” in The Theory of Sundials
