提出一种新颖的双降压式交流斩波器.A novel bi - directional dual Buck AC chopper is presented in this paper.因此, 内反馈斩波调速装置是风机水泵调速节能的首选设备.Finally, the internal feedback chopper regulator is the preferred equipment of fan and water pump regu...
The exhibition is on at Droitwich until May 24. You can also catch it at Leominster from June 5.展览在德罗伊特威奇一直持续到5月24日。从6月5日起，还可以在莱姆斯特参观该展览。Edward Winslow was born in Droitwich, Worcester in 1595.爱德华·温斯洛1595年生于伍斯特的德罗伊特威奇....
获胜者将在本周末的季后赛中对阵奥克兰运动者队。The winner will face the Oakland A's in the playoffs this weekend.从奥尔巴尼到奥克兰的一切线索和疑点都在追查之中.Clues and leads were being followed up from Albany to Oakland.据说奥克兰有近千家餐馆.It is said that there are ne...
My kinsfolk have failed , and my familiar friends have forgotten me.14我的亲戚与我断绝.我的密友都忘记我.Poor Emily. Her kinsfolk should come to her.可怜的埃米莉，她的亲人应该到她这来。Poor Emily. Her kinsfolk should come to her...可怜的埃米莉，她的亲人应该到她这来。They c...
Romans had to look elsewhere to build their mausoleums.罗马人不得不另觅地方建造自己的陵墓.All public projects are mausoleums, not always in shape, but always in cost.所有得公共项目都是坟墓, 不总是外表相似, 但总是付出的代价相似....