When do we begin to get a heavy component of dissonance in high art music in the West?

不协和音从何时开始在西方高雅艺术音乐中占了很大比重？

Once your blood makes it to a lab, technicians put it in a centrifuge, which spins it around fast enough to send the heavier components to the bottom of the tubes, and bring the less dense elements to the top.

一旦你的血液被送到实验室，技术人员就把它放在离心机里，离心机旋转得足够快，可以把较重的成分送到试管的底部，把密度较低的元素带到顶部。