例句與造句

1. However investigations have found that several tilting disc valves and only one bileaflet valve, the Edwards-Duromedics, generate cavitation within the physiological range.
2. In 1968, he collaborated with American engineer Donald Shiley to develop the first " monostrut tilting disc valve " used to replace the aortic or mitral valve.
3. It's difficult to find tilting disc valve in a sentence. 用tilting disc valve造句挺難的