用窗口实时移动的思想计算当前时刻以前一周波电流方均根值平方作为瞬动脱扣的判断依据。
Using the method of window moving in real time, the root mean square value of current of the last cycle was calculated as the criteria for instantaneous overcurrent protection.
马克一共在花园里铺了20吨的沙子，挖了一个24乘12平方英尺的池子，在水池的四周种植了棕榈树和丝兰花，还放置了一把芦苇做的遮阳伞。
Mark spread 20 tons of sand over the garden, dug a 24ft by 12ft pool, surrounded it with palms and yuccas - and made a parasol from reeds.
在中大建筑学院研究人员的指导下，短短两周内已建成450平方米的永久校舍。
With the guidance of CUHK researchers, the 450-square metre New Bud Primary School was built within two weeks.
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