n value是什么意思

用法例句

Detemination of Tensile Strain Hardening Exponent (n-value) of ST Steel;

ST钢硬变硬化指数n值测定

At last,Yule-Nielsen n-value was studied and the best solution was given using iteration met.

介绍了Yule-Nielsen修正光谱Neugebauer方程的色彩预测模型,通过分析有效网点面积率、油墨铺展在不同叠印条件下,光谱反射率的预测模型,说明了物理网点扩大对方程的影响,然后又通过分析纸张的点传递函数PSF和概率模型,指出了光学网点扩大对方程的影响,更优化了模型,最后对Yule-Nielsen方程参数n值,具体做了解释并用迭代法求得最佳的n值。

The results showed that firstly,the level of eutrophication in western coastal area was more serious than the eastern,secondly,the N:P ratios in the coastal water was far more than 16 in the recent years and it belonged seriously P-limiting water,thirdly,after 1998,most factors of the quality of the coastal water had a largely rising.

深圳东、西部海域近年N:P值都远远超过16,属于严重的P缺乏型海域;3。

The analysis of C/N ratio to performance of A/O biofilter impact;

C/N值对A/O生物滤池性能影响分析

FRD discriminance of Chaetoceros response to N/P ratio variation in spring;

春季角毛藻对N/P值响应的FRD判别

The effects of different storage temperature(-5 ℃,-10 ℃,-15 ℃,-20 ℃,-25 ℃) and different package methods(uncover package,vacuum package,package full of nitrogen) on squilla were evaluated by sensory method and biochemical properties including total volatile basic nitrogen(TVB-N)and K value.

结果表明虾蛄的K值与TVB-N值有较好的相关性。