Wood is the main raw material of pellets, but not the only one.

木材是颗粒的主要原料，但不是唯一的。

youdao

In the acid hydrolysis, xylose is the main raw material for preparation of xylitol.

在稀酸中水解，得木糖，是制备木糖醇的主要原料。

youdao

Asphalt concrete has increasingly been adopted as the main raw material for road construction, but some problems have also emerged.

沥青混凝土已越来越多地被采用为公路建设的主要原料，但是不置可否也出现了一些问题。

youdao

Iron ore, the main raw material of steel, changed the lakes area and the nation.

VOA: special.2009.11.11

For 3, once nylon had been discovered and proven useful, the race was on, given the supply of cheap oil (the main raw material) post WWII, from the Arabian Gulf.

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The main reason for Apple announcing a lower gross margin outlook for Q3 was the uncertainty behind the raw material supply chain issues prevailing during the last few quarters due to the Japan tragedy.

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