Three words for "test": differences?
Here are the common definitions for these words:

實驗 - experiment (lit: practical test)
e.g. 物理實驗 - physics experiment

測驗 - test as in exam (lit: test/measure test)
e.g. 英語能力測驗 - English skill test

試驗 - test as in tryout/trial (lit: try test)
e.g. 臨床試驗 - Clinical trial

By the way, I suggest don't use any translation engine if you want to study that language, use actual dictionaries. I believe translation engines are just to get a grasp of the input. At this point in time, humans are needed to finalize the translated outputs.