... proof of polyamides 聚酰胺验证 sulfonyl-containing polyamides 含磺酰聚酰胺 Condensation polymerization polyamides 聚酰胺 ...
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... 磺酰酰 sulfonyl semicarbazides 磺酰氨基 sulfonyl-containing polyamides 硫 sulfur compound ...
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