molecular weight is range 分子质量分布范围
And its composition is rather complicated with the molecular weight range from 1000 to 500000 Dalton.
其分子量分布范围在1000 ~ 500000道尔顿之间，而且呈非均匀分布，组成非常复杂。
The water insoluble precipitate (acetic acid lignin, AcL) had a low weight-average molecular weight range from 341 to 253 (Mw) and a narrow molecular weight distribution from 1.1 to 1.2.
水不溶沉淀物（乙酰化木质素）的重均分子量分布在341到253之间，分散性系数分布在1.1到1.2这一窄范围内。
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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