This instrument is multifunctional type circulation constant temperature water bath, not only to provide a constant temperature bath, used for a variety of high and low temperature test;

本仪器是多功能型的循环恒温水浴，不仅提供一个恒温浴槽，用于各种高低温试验；

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This circulation gets moreor less switched off at night when the temperature gradients disappear or reverse, avoiding heat loss and keeping the nest at a roughly constant temperature.

夜间当温度变化消失或是与白天截然相反时，巢内空气循环减弱，有效避免热流失，使得巢穴室温保持稳定。

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The constant circulation means no refueling interruptions.

这个持续不断的循环意味着没有因补充燃料而中断。

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But the constant circulation of Somali-Americans back to Somalia to visit family or conduct business makes it hard for American intelligence to track would-be jihadists.

ECONOMIST: Somalia and the United States: What's to be done? | The