深能阶 meaning in English

deelevel
deep level

Deep level transient spectroscopy
深能阶暂态光谱学
Hfets ( modulation doped ) : modfets ? basic device , theory . deep level problem ( transconductance collapse ) ; pseudomorphic solution . telecommunications applications ? key features : gain , bandwidth , linearly , noise
调节掺杂场效电晶体-基本元件，理论。深能阶问题(电导崩塌)与假晶方案。通讯应用-主要特点：增益，频宽，线性度，杂讯。