在冷凝器接近标准圆锥接头处打四个穴孔.Make four indentations into the condenser near the standard cone joint.上述装置也称为圆锥摆.The present device is also called a conical pendulum.设有一组平行线与圆锥曲线相交.Consider a family of parallel lines that cut the co...
一团粉尘在他周围扬起。The powdery dust rose in a cloud around him.一驶出内防波堤，我们就扬起了所有的船帆。Once outside the inner breakwater, we began to unfurl all the sails.她朝客厅方向扬了扬头说：“他在那里面。”She nodded towards the drawing room. "He's in there....