看不出原料/多种原料 be made from
铸铁纤维复合摩阻材料由多种原料构成。
The frictional material compounded with cast fiber is composed of various raw materials.
选用多种原料进行不同的处理得到粗制甾醇。
Many kinds of materials were used to get the crude phytosterols through different treatments.
由橙花叔醇、香叶基衍生物和其它多种原料经不同的化学反应手段，可以合成金合欢醇。
Farnesol can be synthesized by different chemical means from different materials, such as, nerolidol, geranyl derivatives or other (compounds).
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