海洋战场环境建设是决定未来海战胜负的关键性因素。
Environment construction is the decisive factor that matters most to the future maritime warfare.
互操作性一直是厂商出于Web服务标准的需要而推动的一个关键性因素。
Interoperability has always been one of the key factors pushed by vendors for the need for Web Services standards.
它认真调查了患者生活史中过敏反应发生的具体时间，发现发生时间乃关键性因素。
It looked carefully at the time in the patients' lives when their allergies were active, and it found that this timing was crucial.
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