experimentern.实验者；实验人员experimentn.试验；实验；尝试vi.尝试；做实验experiments in nature自然实验, 碰运气(的)实验experiment of concrete混凝土试验experiment of platform台架试验experiment environment实验环境experiment examination实验考核Experiment reformation实验改革experiment demonstrate实验演示experiments on animals动物实验experiment and testing实验测试Experimentation device试验平台