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电视台 BBC 2Time relays can be divided into AC relays and DC relays according to different power supply requirements, which are respectively used in AC circuits and DC circuits. Time relays can be divided into power-on delay relays and power-off delay relays according to different functions. Time relays can be divided into sealed relays, small relays and micro relays according to their shapes. In addition to the above classification of time relays, time relays also include special types of relays such as resonant relays, stepping relays, proportional relays, etc.两人来到二院张老太太的屋子，问道：娘，啥事？张老太太怀里揽着香荽，正和张大栓靠在长椅子上说话，听见郑氏问，她抬头笑眯眯地拍拍身边道：坐下说。皮克斯动画工作室（Pixar Animation Studios，香港译作彼思动画制作室），简称皮克斯，是一家专门制作电脑动画的公司。一个在动画历史上闪现光芒不亚于迪斯尼的公司就此结束其传奇般的历史，可以说它实现了一个不可能的任务——超越迪斯尼，但是它凭借精彩的创意和先进的技术成功了。虽然它结束了作为独立公司的历史，但是其精神依然在不同的地方延续。