The products range from diaphragm vacuume pump, vacuume manifolds filtration system, filter holder, pressured gas blowing concentrator, column oven, HPLC accessories and so on.

现主要产品有：无油隔膜真空泵、不锈钢多联过滤器、溶剂过滤器、氮气吹干仪、柱温箱及HPLC相关的耗材配件等系列产品。

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Now, each of you is essentially a place holder or a column.

现在，你们每个人代表一列或者一个位数。

哈佛公开课 - 计算机科学课程节选