Economy deepens the coact that wants economist and mathematician theoretically.经济理论的深化要经济学家与数学家的共同合作.Coact company is a manufacturer specially produced precision stepping motor, brushiess DC motor and drives.本公司是一家专业生产精密...
Igloos are usually dome - shapedand are made of large slabs cut from compacted snow.雪屋通常都是圆顶结构,由坚实的冰雪割成大块的冰砖搭建而成.corpses laid out on cold mortuary slabs放在冰冷的停尸桌上的尸体Slabs of rock had slipped sideways in the remote past, a...