The phrase "a plain technique" is correct and usable in written English.
It can be used to describe a method or approach that is straightforward, simple, or uncomplicated.
Example: "In this tutorial, we will explore a plain technique for improving your writing skills that anyone can follow."
Alternatives: "a simple method" or "a straightforward approach."
Bacri and Jaoui have written plays and films together; this is the first movie that Jaoui has directed, and she uses a plain technique and a simple frame, concentrating on two or three people at a time.
Electro spinning has been demonstrated as a plain technique for manufacturing polymeric nano scale fibers.
The recipe below is a plain technique that will give you a perfectly cooked, moist fillet but would need to be finished with a flavorful sauce.
In fact, Banach demonstrated how to find the desired fixed point by offering a smart and plain technique.
A wear resistant metal matrix composite with a hard tool steel matrix and titanium carbides (TiCs) as reinforcing particles was produced on the surface of a plain carbon steel, using the technique of plasma transferred arc alloying.
Specimen 'PFT' was knitted using float and tuck technique on a plain structure.
By using a solvent-assisted bonding technique with a plain or micropatterned cover plate, enclosed T-micromixers with no side, one side, three sides and four sides patterned with microscale ratchet gratings were fabricated and 3D flow patterns induced by the surface structures at different locations of the microchannels were studied using confocal microscopy.
However, because identifying DCI from all causes of CT hypointensities may be difficult with only a plain CT scan, future advanced techniques and surrogate outcomes should also be designed and introduced [ 31].
My favorite technique to dress up a plain concrete floor is to paint on a faux area rug.
The purpose of this study is to quantify performances of a plain fin-and-tube heat exchanger based on a computational fluid dynamics (CFD) technique.
A plain anterior pelvic X-ray was taken along with MRI of the sacroiliac joints with T1 sequence and fat suppression technique for each patient.
