1.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。 2.The leatherback is certainly not the only animal ...

Heat exchangers sit at the core of every petrochemical facility, and represent a market segment projected to cross $12.7 billion by 2012. Petrochemicals Middle East investigates the systems available, ...