scholarship
Provide scholarships such as TA, RA and fellowships. Most students in department of mechanical engineering provide RA, which is designated by all faculty members in explicit projects sponsored by external institutions (such as the National Science Foundation, the US Department of Defense, the US Department of Energy and the US National Institutes of Health). Full-time RA provides full tuition, scholarships and grants.
Recommendation letters
For students applying for doctoral degree, MIT belongs to the strong Committee system and basically does not need magnetization. Admission is decided by the Committee, but if it is extrapolated, it must be magnetized if it is recommended by teachers or seniors. For students who have already joined the work and want to continue their graduate studies, the school suggests that at least one recommendation letter is written by the faculty and staff of the school you know better, and the other two recommendations can be written by colleagues who work together.
Software background
In short, MIT's overall application is difficult, and MIT's annual admission rate is very low. If you want to apply for a top school like MIT, you need to have a rich software background in addition to a strong hardware background, so it would be better if you had a letter of recommendation from an internationally renowned scholar.