The main panel part comprises a sample holder arranged at the upper part of the panel, and a two-way switch, wherein the upper end of the sample is fixed on the sample holder by a fixing clamp.

主面板部分包括面板上方安装的样品架，样品上端通过固定夹固定在样品架上，面板上同时安装有一个双向开关。

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The main panel part comprises a sample holder arranged at the upper part of the panel, and a two-way switch, wherein the upper end of the sample is fixed on the sample holder by a fixing clamp.

主面板部分包括面板上方安装的样品架，样品上端通过固定夹固定在样品架上，面板上同时安装有一个双向开关。

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