Pulp & Paper chemical knowledge is a must.

具有一定制浆造纸化学品知识。

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Chemistry is a nature science based on experiment, the chemical knowledge is related to social life.

化学是一门以实验为基础的自然科学，化学知识与社会生产、生活联系广泛。

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Chemical structure, as the most common language for chemists, play an important role in recording, propagating and exchanging of chemical knowledge.

化学结构作为化学家最普遍使用的语言，在化学知识的记录、传播和交流中起着十分重要的作用。

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This knowledge is needed to design a chemical that looks enough like the relevant spike element to prompt the immune system to make antibodies that will neutralise it.

ECONOMIST: AIDS vaccines

To make the machine commercial strength and add depth to his materials science knowledge, he brought in Weinberg, his onetime chemical engineering professor at the California Institute of Technology.

FORBES: Upstart Symyx is shaking up the stodgy chemicals industry.

But chemical firm Bayer told the committee their assessment was riddled with "knowledge gaps".

BBC: Week ahead in committees