Can coefficient be compared between two regression models with the same independent variable and different dependent variables?

[Eason Xu]

In other words, y1=a1x1+a2x2+.... ,y2=b1x1+b2x2+.... In this case, can I compare a1 and b1, a2 and b2? y1 and y2 are the same order of magnitude, but express slightly different meanings, one is the entry rate of firms and the other is the new entry divided by the sum of new entry in the whole area, and both are less than 1

[Joseph Coveney]

In this case, can I compare a1 and b1, a2 and b2?

Well, yeah, it's doable, with estimation commands such as mvreg, sureg, sem and even suest.

But from your description, it doesn't come across as a particularly fruitful exercise.