periodiden.[化]高碘化物
periodn.一段时间;周期;时期;课时;学时;句号;月经
periodontal health status牙周病
period of a variable star变星周期
Period of fruit-setting座果期
period of scale expansion规模扩张期
period depreciaton charge每期折旧费用
period of governing Hubei[医] 肛门梳切开术
period of low temperature低温季节
period of communicability传染期
period-luminosity curve周光曲线
period of crop-rotation轮作周期