基本解释突咀英汉例句雙語例句There existed an optimal dosage of the chain extender, lack of which caused deficiency of chain extension and excess of which led to more blocking reaction.擴鏈劑的用量存在最佳值，用量不足時偶聯反應不充分，用量過量時封耑反應加劇。excess extension更多例句专业释义紡織科學技術突咀