翻译一下这段话，用英语 谢谢

it briefly introduces the function of ultrasonic wave and its mechanism. A series of researches have been carried out to find out the different impacts brought by ultrasonic cavitation of different durations to the rheology of the coal-water slurry.The viscosity of the sample coal-water slurry increases as the duration of the ultrasonic cavitation becomes longer.The result shows that ultrasonic wave does have significant impact on the rheology of coal-water slurry. And the final result actually is what it shows after the interaction of certain factors.
key words
水煤浆 coal-water slurry 超声波 ultrasonic wave 超声空化 ultrasonic cavitation
流变性 rheology 粘度viscosity

简要介绍了超声波的空化作用及其机理，通过实验研究了超声波不同空化作用时间对水煤浆流变特性的影响，针对试验煤样，随着空化作用时间的增加水煤浆表观粘度升高，粒度变细，其结果表明超声波作用对水煤浆的流变特性有着十分明显的影响，而最终结果是多种因素的影响此消彼长后所体现出来的综合作用结果。
Briefly introduced the ultrasonic wave cavitation and its the
mechanism, have added water the coal tar through the experimental
study ultr