Chlorophyll content had no significant relation with the net assimilation rate, but was related to the nitrogen content and the specific leaf weight. 葉綠素含量與凈同化速率間沒有顯著關係，但與含氮量和比葉重有關。
The effect of Re element addition on the nitrogen content in the weld was insignificant due to the oxidization from the early deoxidization stage. 而由於稀土元素在先期脫氧中大量氧化，其脫氮效果較弱，稀土元素對熔敷金屬的總含氮量的影響不顯著。
