Specimen可与sample换用，但常指人或物中选出的有代表性部分，或指供科研、化验或检验用的标本。 主要内容如下:分 析介绍了几种常见抽油泵的工作原理、构造 、 适用范围及分类. ft residence in the center of Coconut Grove, tucked away on the peaceful street in one of Miami’s most desirable neighborhoods. This luxury residence features five... 样品; 样本; （化验的）取样; （用于新乐曲中的）节录乐曲;... https://luxuryhomegurgaon.blogspot.com/2025/06/amstoria-verti-greens-elevated-elegance.html