preexperiment

词形变化

preexperiments 复数 preexperiments

释义与例句

n.
  1. 1.

    A simple form of research that examines a group or groups before and after an event, to see whether there is change, but does not employ a control group.

adj.
  1. 1.

    Before an experiment takes place.

词源

From pre- + experiment.

来源：wiktionary