如果船厂可以做超声波试验，则应该用超声波来确认水密舱盖的密封性。
Ultra sonic test to be carried out for confirm tightness of hatch covers if the yard can do.
探讨了超声波应用于木材阻燃浸渍处理过程的可行性，同时讨论了超声波试验参数频率、声强、辐射时间等的选择。
This paper explores the feasibility of ultrasonic technology leading to produce fire-retardant wood and test conditions such as frequency, sound intensity and time etc.
根据其他研究团队既往的试验，该小组认识到超声波可对组织产生物理效应。
The team knew from experiments done by other groups of researchers that ultrasound can have a physical effect on tissue.
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