有一句英语,帮忙看看有问题没It is known as the C9 formula, with 6 carbon atoms at the benzene ring plus three carbon atoms of the propyl side-chain. Besides these 9 carbon atoms, only the carbon atom of the methoxyl units (-OCH3) is prese
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有一句英语,帮忙看看有问题没It is known as the C9 formula, with 6 carbon atoms at the benzene ring plus three carbon atoms of the propyl side-chain. Besides these 9 carbon atoms, only the carbon atom of the methoxyl units (-OCH3) is prese
有一句英语,帮忙看看有问题没
It is known as the C9 formula, with 6 carbon atoms at the benzene ring plus three carbon atoms of the propyl side-chain. Besides these 9 carbon atoms, only the carbon atom of the methoxyl units (-OCH3) is present in the macromolecule.
有一句英语,帮忙看看有问题没It is known as the C9 formula, with 6 carbon atoms at the benzene ring plus three carbon atoms of the propyl side-chain. Besides these 9 carbon atoms, only the carbon atom of the methoxyl units (-OCH3) is prese
化工英语,太专业了.语法上基本通顺.贴要翻译的原句出来看看.
It is known as C9 formula,with 6 carbon atoms at the benzene ring plus three carbon atoms of the propyl side-chain.Besides these 9 carbon atoms,only the carbon atoms of the methoxyl units (-OCH3) are present in the macromolecule.