basisn.基础；根据；基底Basis spectrum基谱basis stapedis[医] 镫骨底basis of study聚散共生basis research基础研究basis contract[经] 基本合同, 期货标准合同basis encephali脑底basis of reform改革根据Basis framework基础框架basis pyramidis[医] [肾]锥体底basis of theory理论依据