古地磁极性年代表 geomagnetic polarity time scale
极性年代单位 polarity-chronologic unit
极性年代 [地物] polarity chron
极性超代 [地物] polarity superchron
极性年代测定 [地物] polarity dating
极性年代地层单位 polarity-chronostratigraphic unit
积极代表性 active representation
磁极性年代表 magnetic polarity time scale
现代极致性价比沙发 modern ultimate cost-effective sofa
根据脂肪烃、多卤联苯、卤代苯和稠环芳烃等80种非极性有机化合物在鱼体中生物富集因子（BCF）的实测数据，建立了有机物在鱼体中生物富集因子的片段常数法估算模型。
Relationship between bioconcentration factor and fragment constants was investigated. A prediction model was developed on the basis of the observed BCF values of 80 non-polar organic compounds.
溶剂对1-溴代烷烃的选择性也产生显著的影响，非极性溶剂有利于1-溴代烷烃选择性的提高；
The solution type also had significant effect on the selectivity of 1-bromo-hydrocarbon, the no polar solution was favorable for the selectivity.
与此同时，他们的管理者也必须为留住“网络一代”并提高其积极性而付出额外的努力。
Their managers, meanwhile, will have to make an extra effort to keep Net Geners engaged and motivated.
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