The phrase "attached under this" is correct and usable in written English.
It can be used when referring to a document or file that is included with a message or correspondence, typically in emails or formal communications.
Example: "Please find the report attached under this email for your review."
Alternatives: "attached to this" or "included with this".
"When the sticky bombs started to emerge it was easy to find them because they were usually attached under the fuel tank".
The first true modern reel was a geared multiplying reel attached under the rod, in which one turn of the handle moved the spool through several revolutions.
Make sure that all the exposed copper is securely attached under the brass screw on each of the prongs in the plug.
The measurement system consisted of a permanent magnet attached under the tibial plate of the prosthesis and a combination of magnetic sensors in the polyethylene insert.
Ground controllers ordered that a retrorocket unit attached under the heat shield by metal straps not be jettisoned after firing in order to give added protection and reduce the risk of premature detachment of the heat shield.
Eight scalp electroencephalogram (EEG) and two electrooculogram (EOG) electrodes were referenced to unlinked contralateral mastoids (F3/A2, F4/A1, C3/A2, C4/A1, P3/A2, P4/A1, O1/A2, O2/A1, LOC/A2 and ROC/A1), and two electromyogram electrodes were attached under the chin to measure muscle tone.
The PVT collector consists of specially designed rectangular tube absorber (stainless steel material, height of 15 mm, width of 25 mm and thickness of 1 mm) attached under the photovoltaic module.
The light-sensitive chip is attached under the retina at the back of the eye.
It has a built-in Fishman internal preamp and pickup which is attached under the sound hole.
The images in Fig. 8 are the AFM phase contrast images made in AC; additionally, cross sections of the GO flakes are attached under the corresponding images.
