METHODS The lipid nanoparticles were prepared by high speed mixing.

方法：采用高速匀质法，制备脂质纳米球。

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If the whites form firm, shiny peaks before the syrup reaches temperature, reduce the mixer speed to low and keep mixing the whites until the syrup catches up.

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Reduce the mixer speed to low and add the dry ingredients, mixing only until they are incorporated.

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Finally, AgustaWestland surprised the HeliExpo crowd by revealing that it has been secretly testing an electrically powered tiltrotor, mixing the versatility of a vertical takeoff and land helicopter with the speed and range of a fixed-wing aircraft.

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