Hatchlings are simply too small to conserve body heat, even with insulation and countercurrent exchange systems.
刚孵出的小海龟太小了，即使有保温和逆流交换系统，也无法保持体温。
The invented heat exchanger including multiple cascaded recuperators forms heat exchange mode of stepped countercurrent liquid bath.
本发明涉及一种多级液浴式换热器，它由多个换热室串联组成，形成梯级逆流液浴换热方式。
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