Methods Suspensions of HL-7702 were exposed to diagnostic ultrasound at frequency of 2 MHz and for continuous 10 min, MI=0.15, 0.61, 1.2 and 1.9, while the contrast group did not expose to ultrasound.是什么意思_Methods Suspensions of HL-7702 were exposed to diagnostic ultrasound at frequency of 2 MHz and for continuous 10 min, MI=0.15, 0.61, 1.2 and 1.9, while the contrast group did not expose to ultrasound.在线翻译_英语_读音_用法_例句