회로가 절연돼 있지 않고 코일의 일부를 공통 전로(電路)로 하는 변압기* 플래시버트(flash butt)용접:전기저항을 이용해 용접부에 고열을 발생시켜 고압으로 레일을 압착시키는 방법* 테르미트(thermit)용접: 산화철과 알루미늄 간에서 일어나는 약 2천℃에서의 화학반응으로 용융철을 얻어 용접하는 ...
about Adolf Hitler for this reason, and tit is rather embarrassing that now is the American President who serves as a butt of astrology jokes.But what is astrology, anyway, and why might Reagan be attracted to it?In ancient times, it was apparent that the sun and moon had an important influence on Earth. The sun supplied light and warmth by day and controlled the seasons, while the moon dimly ...