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过滤法配制试样 sample preparation by filtration 回跳法配制试样 sample preparation by recoil 沉积法配制试样 sample preparation by sedimentation ..
英汉双解词典包含3185865条英汉词条,基本涵盖了全部常用单词的翻译及用法,是英语学习的有利工具。