The result indicates when analyzing the sample, if using the mass fraction to express the concentration of n…
如果用质量分数表示氧的浓度，应在进口浓度高于出口浓度时取样，否则存在取样分析误差或滞后现象。
Puromycin is used in cell biology to select mammalian cell lines that have been transformed by vectors that express puromycin-N-acetyl-transferase.
在细胞生物学中用嘌罗霉素来选择用载体转化能表达嘌呤霉素- N -乙酰基转移酶类的哺乳动物细胞系。
For node number n , the series equations can be written as a linear equations, also can be express as a triangle array as following.
此线性方程组可用追赶法求解，也可用高斯法求解，还可以采用迭代法求解。
Compared with SPAD readings, the normalized redness intensity (NRI), with a high rvalue of 0.541-0.780 with conventional N parameters, could better express the N status of rice.
红光标准化值与叶绿素仪SPAD读数相比能更好地表征水稻幼穗期的氮素营养状况， 与常规测试指标的相关系数介于0.541～0.780之间。
Compared with SPAD readings, the normalized redness intensity (NRI), with a high rvalue of 0.541-0.780 with conventional N parameters, could better express the N status of rice.
红光标准化值与叶绿素仪SPAD读数相比能更好地表征水稻幼穗期的氮素营养状况， 与常规测试指标的相关系数介于0.541～0.780之间。
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