Terms for subject Research and development containing BP

English	Russian
cal BP	калиброванных лет до настоящего времени (Radiocarbon dating [радиоуглеродный анализ]: cal BP – calibrated years before the present; cal ka BP – calibrated thousand years before the present; cal Ma BP – calibrated million years before the present; thoughtco.com Dms64)
cal ka BP	калиброванных тысяч лет до настоящего времени (Radiocarbon dating [радиоуглеродный анализ]: cal ka BP – calibrated thousand years before the present; Dms64)