So, that's probability density, but in terms of thinking about it in terms of actual solutions to the wave function, let's take a little bit of a step back here.
这就是概率密度，但作为，把它当成是，波函数的解，让我们先倒回来一点。
2
PDC cutter size, back rake and density are very important design parameters affecting the performance of PDC bit.
PD C切削齿尺寸、后倾角和布齿密度是影响PD C钻头性能的重要设计参数。
3
The laying position and well blowout pressure are analyzed and discussed briefly and the relationship curve of drill bit pressure drop vs flowrate and fluid density i.