applied nitrogen level的用法和樣例：
例句
- 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。
