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虫胶
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虫胶
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虫胶
紫胶虫分泌的一种天然琥珀色树脂物质。以紫胶树脂为主要成分,混合着紫胶色素、紫胶蜡、糖类、蛋白质、盐类(或其他掺杂物)等物质。原名紫胶。
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虫胶
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lac
虫胶
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scoping study of mineral resource exploration
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scopoletin
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Scorched earth policy
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scorch retarder; anti scorching agent
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