The phrase "almost equivalent to a" is correct and usable in written English.
You can use it when comparing two things that are similar but not exactly the same in meaning or function.
Example: "The new software is almost equivalent to a traditional word processor, but it offers additional features."
Alternatives: "nearly the same as a" or "practically identical to a".
And Tatsat Banerjee wrote: "Now our Facebook profile is almost equivalent to a personal Web site.
"This pipeline, it's almost equivalent to a large Russian roulette game," Mr. Snow said.
His team said that Mr Mbeki's proposals were "almost equivalent to a coup d'état and would bring conflict from the field into the government".
She said she did not anticipate "Smackdown" losing viewers by moving to cable because SyFy is a fully distributed channel, almost equivalent to a broadcast network.
It changed Valve from a remarkable game developer into something almost equivalent to a platform holder, a benevolent gatekeeper, but a gatekeeper nonetheless.
It would be capable of not just negotiating its environment but also intelligently manipulating objects a level of functioning almost equivalent to a human servant.
Key issues are dimensionality: models may involve several undetermined parameters, identification: different parameter combinations may produce similar dynamics, for example, increasing a production rate may be almost equivalent to decreasing a decay rate, local maxima: the likelihood function may have many locally optimal values.
"It's almost equivalent to hanging a patient by the rib after it's opened — just hanging them in the air," said Mr. Pell.
This correction is to account for typical differences between the time of the main shock and the generation of the tsunami; this is almost equivalent to assuming an averaged apparent (i.e. projected to the seafloor) fault rupture velocity of 2 km/s.
The collective motion of a single-species plasma in a radio-frequency quadrupole trap is physically almost equivalent to that of a charged-particle beam propagating through a periodic magnetic lattice.
Our musculoskeletal robot in Fig. 11 has eight multifilament muscles that affect knee motions on the thigh and 12 muscles that affect ankle motions on the lower leg, where the shape and size of the multifilament muscles are almost equivalent to those of a human.
