Typically, heating occurs over an open gas flame, releasing the potent neurotoxic element into the atmosphere.
通常是在敞开的气火焰上加热，就把对神经有强烈毒害作用的元素释放到了环境当中。
The death was ruled homicide by hyperthermia, or high body temperature. The absence of external burns ruled out an open flame, scalding water or a heating pad as the cause, Betz said.
该婴儿的死亡被认定为被高热致死或由于体温过高致死。 彼茨说，之所以这样认定是因为婴儿尸体上没有外部烧伤因而排除了使用明火，热水或热垫的可能性。
A new type of less oxidized high-speed burner has been successfully developed which will open up the way to the application of open-flame less oxidized heating with natural gas.
我们研究成功了一种新型少氧化高速烧嘴，为采用天然气进行敞焰少氧化加热开辟了新途径。
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