本: I stem or root of plants期: designated time变数: variable本期内生变数: current endogenous variable本期外生变数: current exogenous variable本期: current operating (performance) income statement; current period; current time period变数: defines a variable; do variable do; fluent; variable本期数: current period amount还本期: pay back period回本期: payback period; payoff period样本期: sample period长期变动: long term changes; long time changes; long time fluctuation长期变化: long period variation; long term change; long-period variation; long-term change; secular change; secular variation长期变星: secular variable长期变异: secular change长周期变星: long period variable; long-period variable长周期变异: long-term variation初期变黄: initial yellowing初期变色: first discoloration; first discolouration初期变性: degenerescence初期变质的: protometamorphic磁长期变化: magnetic secular change第二期变形: second deformation第一期变形: first deformation动情期变化: estrinization