Bohr's orbit radius has nothing to do with reduced mass.

玻尔轨道半径与折合质量无关。

youdao

Use of electron mass instead of the reduced mass to calculate the ground-state energy of the hydrogen atom gives-13606ev which is in error by7parts in13000.

用电子质量代替折合质量去计算氢原子基态能量给出- 13606电子伏，误差是13000分之7。

youdao

The reduced kinetic energy is discussed using the reduced mass of the constrained two bodies. Then a simple method to solve the constrained two bodies problem is presented.

对受约束的两体问题在其自由方向上引入折合质量，并由此导出了受约束两体问题中质点的折合动能，同时也给出了处理受约束两体问题的一种简便方法。

youdao

He goes back and redoes the calculation, only in this case he says what I am going to do is I am going to redo the calculation for helium, but I am going to consider not just the mass of the electron but the reduced mass of the system.

他回去重新做了计算，仅在这种情况下他才会说说我将要,为氦重做计算，但我认为,不只是电子的质量,还有系统质量的减少量。

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Your mass is reduced so that your density is the same as usual.

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It has been reduced to a horrible mass of contorted steel and concrete.

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After the mass of onions in the pan has significantly reduced in volume the onions are softer and suppler and have fallen considerably it's time to turn the heat to medium-low and ride this baby out for as long as it takes, stirring and turning the onions every 10 minutes or so and making sure that they don't start to stick or burn at any point.

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