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十字蕨目
小灌木,立体分枝,无叶片,产顶生孢子囊,主轴、侧枝和羽轴横切面初生木质部呈十字形的一类真蕨植物化石。
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early warning action
early warning all clear
early-warning analysis
early warning and prediction of social unrest
early warning and surveillance
early warning classification
early warning information
early-warning level
early-warning level response technology of social security
early warning of diseases in aquaculture
early-warning of Geological hazard based on meteorological factor
early warning performance
early warning period
early warning satellite
early-warning system
early water flooding
early weaning
early winter disaster of wheat
early wither of wheat on hot days after rain
early wood
earmuff
earmuffs cap
earned premium
earned surplus
Earned Value Method
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