The phrase 'this is a cumbersome' is correct and can be used in written English.
It is often used to describe something that is difficult to do or manage because it is complicated or takes a long time. For example, "Making this website is proving to be a cumbersome process."
Since patent disputes can hinge on the meaning of a single word, and some applications can be hundreds of pages long, this is a cumbersome rule.
Often this is a cumbersome process and requires the owner to ensure multiple products are charged and connected.
This is a cumbersome task for teachers, since it involves manually assessing the type/level of tool-supported guidance to be provided and potentially refining these to meet guidance needs of individual students.
This is a cumbersome procedure with variations in cell yield.
Although this is a cumbersome method of providing return postage, we wanted to see if eliminating postal costs that might be a barrier for some respondents would have an effect.
This was a cumbersome Soviet-era single-engine biplane, loaded with Russian dignitaries and a few of Paulsen's friends.
This was a cumbersome system, however, and it was not until 1600 that efficient methods of scene changing could be devised.
This was a cumbersome way of acknowledging that almost no actual Americans were interested in what Americans Elect was offering them.
This was a cumbersome process and resulted in poor or improper usage of bed nets within the community.
Manual step-wise execution of this workflow is a cumbersome process ill-suited for efficient, interactive fitting of theoretical models and experimental data.
"This is a big, cumbersome company with lots of challenges," Mr. Adamson said in a telephone interview last week from Kmart's headquarters in Troy, Mich., a Detroit suburb.
