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  • mechanical calculator

mechanical calculator

mechanical machine for arithmetic operations for absolute calculators

en-GB/mɪˈkænɪkl ˈkælkjʊleɪtə/
en-US/məˈkænɪkəl ˈkælkjəˌleɪtɚ/

카테고리:

machineinventionmathematical instrumentcalculating tool