"Repeatable results" simply means that if you were to perform the same action or experiment multiple times, you would get consistent or similar outcomes every time. Full definition
When mixing flash with additional light sources, exposure, white balance, and color rendering remain accurate, with repeatable results over consecutive exposures, but a slight ghosting effect appears on some portraits and color shading is also evident, along with a pink color cast in the center shifting to green at the edges. (dxomark.com)
We do not always get repeatable results with that position. (siriusdog.com)
Same data produced from observable science does produce for both sides the same repeatable results for modern advancements in science and produces goods suitable for the good of mankind. (religion.blogs.cnn.com)