使用多变量cox比例风险模型来确定与早期新生儿死亡相关的因素。
Multivariate Cox proportional hazards models were used to identify factors linked to early neonatal death.
我们一开始有四个变量：，温度，压强，某个组分在液体中的比例，和它在气体中的比例。
We started out with four variables; the temperature, the pressure, and the components in the composition in the liquid phase and the composition in the gas phase.
介绍了电反馈电液比例恒压变量泵的计算机PID控制。
The computer PID control for electro hydraulic proportional constant presure variable displacement pump with electric feedback is introduced.
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