This study presents a new single - stage single - switch PFC flyback DC converter.文章研究了一种新型 单级 单开关PFC反激变换器.A novel multi - output forward - flyback converter with secondary side post regulation is proposed.详细分析了一种运用了后级调整...
他属于奥康纳家族，是爱尔兰最后一位君王的嫡系后裔。He was an O'Conor and a direct descendant of the last High King of Ireland.肖恩·康纳利在他的新片中为求真实，坚持自己出演特技部分。Sean Connery insisted on living dangerously for his new film by performing his own stun...
The teaching day finishes at around 4pm.一天的教学在下午4点左右结束。Martin's weak cries for help went unheard until 6.40pm yesterday.直到昨天傍晚6点40分，马丁微弱的呼救声才被人听到。The evening milking is usually done at about 7.30pm.晚上通常在7点半左右挤奶。The ...