Finally, if the imaginary part of the permittivity is not equal to zero and so energy is lost (whatever the real part is), then the element can be thought of as having resistance.

如果介电常数的虚部不等于零，则存在能量损失(不管实部为多少)，因而，可以认为该元件具备电阻性。

youdao

For starters, when U.S. housing prices were rising, the government actively took part in inflating the real estate bubble by pushing rates lower and offering zero-down loans (subprime) to middle to low-income buyers.

FORBES: China's Non-Bubble Housing Bubble