In a word, theoretical studies and lab experiments have both showed that it is possible to reduce the viscosity of crude oil when the ultrasound has a reasonable intensity and frequency.
总之，理论研究及室内实验均表明在合理的作用强度和频率下，利用超声波降低原油粘度是可行的。
In a word, theoretical studies and lab experiments have both showed that it is possible to reduce the viscosity of crude oil when the ultrasound has a reasonable intensity and frequency.
总之，理论研究及室内实验均表明在合理的作用强度和频率下，利用超声波降低原油粘度是可行的。
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