As he was still not allowed to run a company, his wife became its nominal head.
由于他仍未获准管理公司，他的妻子就成了公司名义上的老板。
The nominal head was presented for preliminary selection of hydraulic models, with consideration of the efficiency and reliability at all operation conditions.
为了兼顾各种特征扬程工况下的运行效率和可靠性，在水力模型初选阶段提出了选型名义扬程的概念。
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