This machine comes with a micro knob for fast adjustment of tin dipping depth by lifting the tin cup up for precise dipping depths.

本机以快速微调钮旋转方式调整点沾之深度，并也可调整小锡杯升起高度，使点沾度达到更准确。

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And the content of tin is increased with depth and gradually decreased around Longxianggai rock.

铟的含量存在以龙箱盖岩体为中心向四周逐渐降低，随深度增加而提高的规律。

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And the content of tin is increased with depth and gradually decreased around Longxianggai rock.

铟的含量存在以龙箱盖岩体为中心向四周逐渐降低，随深度增加而提高的规律。

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