fractionated
v.
把…分成几部分( fractionate的过去式和过去分词 );
（用分馏法等）分解（混合物）;
分级;
[医]分次的，分割的;
例句:
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The FCC gasoline can be fractionated into three fractions and treated separately.
因此触媒裂解汽油应分馏成三馏份以便个别处理.
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In the post - Watergate era, power has been fractionated on Capitol Hill ( Evan Thomas )
在水门事件之后的时代里, 权力已被国会分割 ( 埃文托马斯 )
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The relative molecular mass of chitosan fractionated by wave was measured by the light scattering method.
采用粘度法分析了不同溶剂对壳聚糖粘度的影响,用光散射法测定了超声波分级的壳聚糖的相对分子质量.