不太好

Their service helped the company make its advertizing more productive and profitable.

他们的服务有助于该公司所作广告更加有效和有利可图。

Both the measurement scheme of the SCG rotor drift based on the model and its parameter relationship are presented.

通过无量纲化和微位移范围内线性化处理及利用最小二乘算法，建立了转子偏移测量模型。