The phrase "as decreasing" is correct and usable in written English.
It can be used in contexts where you are describing a trend or a change that is happening in a decreasing manner.
Example: "The data shows a clear pattern as decreasing in temperature over the past week."
Alternatives: "as diminishing" or "as declining".
"A 15-cent tax is a meaningless figure as far as decreasing smoking," Ms. Sumner said.
They are twice as likely to see the number of jobs in their area as decreasing instead of increasing.
Autumn is the most difficult period, as decreasing rainfall and increasing evaporation necessitate continuous irrigation.
"If production costs are going up [owing to the weak pound] do you do something to control costs such as decreasing your quality?" said Tooke.
Agency officials say the deficit is largely due to rising energy, pension and labor expenses, as well as decreasing aid from the federal, state and city governments.
But it has had to make sacrifices to keep on target, such as decreasing hiring and making changes in operational plans, including eliminating a nightly medal awards ceremony in downtown Whistler that has that community's residents feeling betrayed.
And they certainly increased radiance and glow in each (as well as decreasing coverage and lightening the shade a tad, so do account for this), and this was noticeable both on and off camera.
Moderate stress may be relieved by exercise, meditation (e.g., yoga or Oriental meditative forms), sufficient rest, and modification of diet, such as decreasing intake of alcohol and caffeine.
Few studies examined changes in error severity, but minor errors were most often reported as decreasing.
Preservation of increasing and decreasing failure rates, as well as decreasing reversed hazard rate, is considered.
The compressive strength of the UPM increased as decreasing water-cement ratio.
