Now in its ninth generation, Lenovo's premium two-in-one convertible features a familiar design that's soft and rounded (and perhaps a bit dated) but also extremely thin, light and compact.

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可广泛应用于地表水，自来水，工业废水及生活污水的萃取工作。例如:水体中的石油类，挥发酚，阴离子等物质的萃取工作。 仪器特点： 1. 封闭式萃取，*模拟人工手摇，360度旋转。侧地解决试剂挥发问题，使分析结果真实可靠。 2. 萃取效率大于95%，与普通 ...

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