The stone forming a threshold.
a unit of perceived loudness equal to the loudness of a 1000-hertz tone at 40 dB above threshold
below the threshold of conscious perception
a-m threshold
[电] 幅调临限
absolute threshold
[医] 绝对阈, 刺激阈
achromatic threshold
[医] 感色阈, 无色阈
adaptive threshold control
[计] 自适应阈值控制
adaptive thresholding
[计] 自适应阈
apparent threshold
[电] 视限界
at the threshold of
在...的初期
auditory threshold
[医] 听阈
automatic threshold variation
[电] 自动临界改变
consciousness-threshold
[医] 意识阈, 神志阈
convulsant threshold
[医] 惊厥阈, 最低惊厥剂量
cross the threshold of
跨过…的门槛,步入,跨进…
difference threshold
差别阈限
differential threshold
[医] 差阈
displacement threshold acuity
[医] 变位阈, 微变敏度
dissociation threshold
[化] 解离阈值
divergence threshold
[经] 差异门槛
double point threshold
[医] 两点差别阈
erythema threshold
[医] 红斑阈
f-m threshold
[电] 调频临限