"obvious decline" is a valid part of a sentence in written English.
You can use it to describe a situation or event that has visibly become worse. For example, "The company's sales showed an obvious decline in the last quarter."
The obvious decline is on the right.
But inland blocks are in obvious decline — boarded-up houses, four cars crowded onto one lawn.
What there is suggests no obvious decline in performance, at least up to the age of 60.
The resultant membranes display highly alkaline stability and their IEC values and conductivities don't have obvious decline in 4 M NaOH solution at 80 °C for 336 h.
Moreover, long-term stability performance by chronoamperometric and chronopotentiometric tests for the activated Fe-doped Ni2P nanocatalysts exhibited no obvious decline within 56 h.
The prepared superhydrophobic fabric can withstand a large number of abrasion cycles and 20 cycles of accelerated washing without obvious decline in the water contact angle.
The dollar factor shows an obvious declining trend from 2002 to 2008.
So, I was not looking at her for a diagnosis but for an affirmation of the obvious declining health of my car.
We found that the expression protein of bcl-2 exhibited an obvious declining tendency after EAE treatment, and the bax and caspase-3 exhibited an obvious increasing tendency.
However, it might be possible that the age-related decline in oligodendrogenesis would occur even before obvious declines in myelin density or cognitive function.
Only two hospitals exhibited obvious declines; fees in hospital I were reduced by 46.62 %, and fees in hospital K were reduced by 37.97 %.
