The phrasing 'doubly increase' is correct and can be used in written English.
It means to increase something by a factor of two. For example, "The new tax laws will doubly increase the cost of gas."
When the pressure was 1 and 5 mTorr, the plasma density doubly increased.
The fluctuation budget has to be controlled ever tighter due to doubly increased transistor numbers along the technology node advancement.
Findings show that the grid erosion increases with an increasing doubly charged ion fraction under the same propellant flow rate and the same beam current condition, which suggests that the doubly charged ion fraction is a crucial factor in life prediction accuracy.
As SULT1A1 becomes doubly occupied, kcat increases 8-fold; the catalytic capacity of the system increases by a factor of nearly 10, and Km decreases ∼25-fold for only large substrates.
Example Let ( β n ) n = − ∞ ∞ be a strictly increasing doubly infinite sequence in ( 0, 1 ).
The C/N ratio of active SOM reached steady state after 55 years, and increased doubly (from 12.5 - 15.6 to 32.2-33.8).
The amount of this doubly fucosylated peptide increases 4-fold in liver disease but to the same degree in the cirrhosis and HCC groups.
"So the increase is doubly important because it's a bigger slice of a bigger pie".
Ludicrous!" sputters Mr. Shepherd, doubly aggrieved that the increase has the blessing of his very own former employer, the State of New York.
Volumes of regions of the state space are associated with the dimensionality of the smallest subspace containing the region, and an analogue of Liouville's Theorem holds for unitary evolution (doubly stochastic transitions may increase, but cannot decrease, this state space volume).
