18.The play opens with three similar figures of “indeterminable”age, Flo, Vi, and Ru, sitting quietly on a narrow bench like seat surrounded by darkness.
19.Bench of closed circuit cooling tower that is composed of boiler ,exchanger, orifice flowmeter, water pump, micromanometer , heat indicator and so on is established.
20.In this paper, we utilize current equipments such as dynameter and specific fuel consumption detector, and design a set of engine test bench platform based on P89C668.