机械式温控的产品因为没有显示板，所以不能直接了解内胆中的热水的实际温度。
Mechanical temperature control products because there is no display board, so can not directly understand the actual temperature in the hot water tank.
机械式温控的产品因为没有显示板，所以不能直接了解内胆中的热水的实际温度。
Mechanical temperature control products because there is no display board, so can not directly understand the actual temperature in the hot water tank.
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