1. 低估：underestimate 低估 | underestimation 低估 | underexpose 曝光不足
2. 估计不足：underestimate 低估 | underestimation 估计不足 | underexcitation 欠励磁
3. 中度低估：- non-vertical position of the tonometer.眼压仪不垂直. | underestimation 中度低估 | IOP underestimation 低估
noun
1. an estimation that is too low
an estimate that is less than the true or actual value