The VPO average molecular weight of vacuum residues and asphaltenes all decreased.
减压渣油和正庚烷沥青质的VPO平均相对分子质量都减小了。
Lower average molecular weight of LGV samples was unfavourable for the adsorption and hydration.
平均分子量太小，不利于产物的吸附与水化，平均分子量太大。
Different grades of crystal polystyrene molding pellets range from 150,000 to 350,000 weight average molecular weight.
不同牌号的结晶聚苯乙烯模塑粒料平均分子量范围从150,000 - 350,000。
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