在三相异步电动机的电气保护中,经常使用熔断器作为短路和过载保护,但熔断器非正常熔断的现象时有发生,如不及时采用相应措施,电机......

Radiation exposure has been linked to increased risk of congenital hypothyroidism (CH) for decades. CH is a relatively u......

Radioactive fallout after the March 2011 Fukushima nuclear meltdown entered the U.S. environment within days;levels of r......