Whats more, SG parameters undergo large changes according to different operational conditions. The SG cannot work satisfactorily with conventional fixed PID gains over full operating range.

而且SG参数随着不同运行工况变化而变化，传统的固定参数PID控制系统难以在全功率范围内取得令人满意的结果。

youdao

Not as much as some apparently fear, according to analyst Tom Watts of SG Cowen.

FORBES: Magazine Article

Eric Schmidt, analyst at SG Cowen, predicts Ciphergen will eke out a slight profit in 2004.

FORBES: When The Bio Chips Are Down

Jump on the super-slick MTR subway (www.smrt.com.sg) and you will be there before you can say "Versace".

BBC: A perfect day in Singapore