作物: crop年: year作物年度: crop year作物: crop 夏收作物 summer crop; 油料作物 oil-bearing crop; 作物改良 crop improvement; 作物区 crop belts; 作物栽培 arable farming 生物年代: biochron生物年代表: biologic time scale生物年代的: biochronologic生物年代型: biochronotype生物年代学: biochronology; chronology生物年龄: biochron实物年限: physical life货物年流通量: annual cargo throughput鉴定文物年代: determine the date of a cultural relic生物年代单位: biochronologic unit农作物;作物: croplant反对滥用药物年: year against drug abuse浮游植物年循环: annual phytoplankton cycle浮游值物年循环: annual phytoplankton cycle古生物年代对比: palaeontological age correlation国际不明飞行物年: international year of unidentified flying objects国际生物年代学会: international society for chronobilogy; isc矿物年代的确定: age determonation生物年代地层单位: biochronostratigraphic unit; biochronostratigraphicunit生物年代地层的: biochronostratigraphic伴作物: secondary crop