而由于稀土元素在先期脱氧中大量氧化，其脱氮效果较弱，稀土元素对熔敷金属的总含氮量的影响不显著。
The effect of Re element addition on the nitrogen content in the weld was insignificant due to the oxidization from the early deoxidization stage.
蛋白质的总含量即可由含氮量乘以常数6.25算出。
So total protein content can be determined by multiplying nitrogen by the factor 6.25.
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