The switch activity is an important factor of power consumption.
交换频率是影响功率消耗重要的因素之一。
Objective To study the biological activity of placenta factor(PF) .
目的进一步探讨胎盘因子（PF）的生物活性。
The mass coefficient was brought forward to assess the activity factor of original coal gangue.
引入质量系数法评定原状煤矸石经热活化后辅助胶凝性能的大小。
The mass coefficient was brought forward to assess the activity factor of original coal gangue.
引入质量系数法评定原状煤矸石经热活化后辅助胶凝性能的大小。
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