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The creepage distance is divided into two grades, and the creepage distance of 300V grade is ≥ 5 mm; Creepage distance of 600V grade ≥ 7mm. The creepage distance is designed for 220V voltage according to 300V grade, and the creepage distance is designed for 380V voltage according to 600V grade. For 220V and 380V high-power parts, character marks are applied to allow cuts in PCB design to meet the requirements of creepage distance.张良有些歉然，解释道：沛公，张良之所以这么做，并非为了眼下，而是为了您的将来在着想。3. Ships of 12m length:四千军士还奈何不了三五倭寇？群情激奋之下，全军冲锋。本剧主要讲述了民国初年，江湖女子钱宝宝为救母亲，意外顶替留德女博士章晗进入军校成为一群热血制服男的女教官，本想治好母亲的病就离开，却卷入到一场三角恋爱中，一边是热情追求的项昊，一边是女博士的未婚夫：财阀之子沈文涛。钱宝宝不仅面临着情感的纠葛，还面临身份随时被揭穿的危险。意外的是留德女博士章晗并没有死，她的归来让钱宝宝面临道德的拷问。一波未平一波又起，日本人的邪恶势力正在悄悄渗透，军校被阴谋与悬疑的气氛笼罩。钱宝宝该如何获得大家的信任？面对国仇家很，昔日宿敌能否解除心中芥蒂？为了更优秀而竞技，为了保家卫国而战斗。制服诱惑的外表下是热血青春的本色。Others:After saying this passage, Zhao Mingkai's eyes looked at the light in the interview room and fell into a silence. I knew that he was thinking of sad things. He tentatively asked him how Zhou Xiaolin was doing later. He sighed deeply and said with a regretful tone: