-ance

appear-ance

n. 外貌，外观；出现，露面

Bouin-Ancel test

[医] 布-安二氏试验(检孕激素)

control-grid plate transconduct-ance

[电] 控栅屏互导

exteranl critical damping resist-ance

[电] 外部临界阻尼电阻

normalized characteristic imped-ance

[电] 标称特性阻抗