作者重点研究了生活污水COD/TN比值变化对其除磷脱氮性能的影响。
The effect of the COD/TN changes of domestic sewage on denitrification and dephosphorization is studied emphatically.
证据就存在于海洋泥土，花粉化石和记录温度变化的化学同位素比值变化之中。
The evidence lies in ocean mud, in fossil pollen, and in changes in ratio of chemical isotopes that record shifts in temperature.
研究了财务杠杆率的图像，讨论了它随税息前盈余与债息之比值变化的规律。
It could shows a rule that the graph changes with the ratio of EBIT to liability interest.
通过对极紫外多层膜反射特性的分析，得到了峰值反射率、带宽和中心波长分别随粗糙度、周期厚度以及比值变化的函数关系。
By analyzing reflective properties of multilayers, the peak reflectivity, bandwidth and centroid wavelength as a function of roughness, period thickness and thickness ratio were obtained.
最长与最短染色体比值变化较大，为2.78～3.20； 平均臂比、着丝点指数、核型不对称系数、相对长度变化范围较小。
The ratio of the longest chromosome to the shortest range in 2.78~3.20. And index, index of karyotypic asymmetry and relatived length changed indistinctly.
为了简单起见，我们使用2：1的速率比值——每个应用程序的情况不同，而且速率通常会随时间而发生变化。
The 2:1 rate difference is for simplicity — every application will vary and the rates usually change over time.
相对湿度，是空气中绝对湿度与饱和湿度的比值，它随着温度变化。
Relative humidity, a percentage, is the ratio between the water vapor present and the air's saturation point, a figure that changes with the temperature.
如果把贫富排行榜上前五个州的平均人均GDP和后五个州的平均人均GD P作对比，这个比值的变化幅度会小一些，但仍将呈上升趋势。
The change is less pronounced if you average GDP per head in the five richest and five poorest states, but it still holds.
而且我认为人们也会开始考虑，像电子的质量对质子的质量的比值，也许其他无量纲的常数也在发生变化。
And I think people would start looking to see, well, maybe other dimensionless ratios like the ratio of the mass of the electron to the mass of the proton are changing.
田间状况下对烤烟下、中、上三个部位叶片生长发育过程中叶片干鲜比值的变化进行了研究。
The changes of leaf ratio of dry to fresh weight in flue-cured tobacco green leaves during the field growth were studied.
探讨了脑室容量随年龄变化的规律及各脑室容量之间的比值。
The volume ratios of different ventricles and the rules of the volumes change with age were explored in CT imaging.
得到了93W合金在高压下材料屈服强度随冲击压力的增大而增大，但其与冲击压力的比值则随冲击压力的增加而减小的变化规律。
Based on which we find that although the yield strength of 93w increases as the shock pressure increases, but the ratio of the yield strength to the shock pressure decreases.
单位砂浆体积下集料的表面积的变化对邻近集料表面最近间距的平均值有影响，但二者之间的比值并非常数。
The surface area of aggregate per unit volume of mortar does have influence on the mean value of the nearest surface spacing, but the ratio between them is not constant.
HRV频谱中低频和高频成分的比值（LF/HF）随着睡眠深度的变化而波动。
The ratio of the low frequency to high frequency components in HRV power spectrum(LF/HF) fluctuates with the change in the sleep stages.
结果表明，两者单、双体荧光强度比值及荧光偏振度的变化，差异均无显著性（P＞0．05）。
The result showed that ratio of single and double layer of fluorescent intensity or the change of degree of polarization weren't difference(P>0.05).
分析表明：负荷-舒适度指数比值曲线在整个坐标轴范围内比值很稳定，说明舒适度指数相对于温度能更好地反映电力负荷的变化。
The analysis indicates: the load amenity index ratio curve is very stable in all axis range, this indicates amenity index can better reflect the change of power load relative to temperature.
总有效率分别为97.1 %和83 .3 % ，REG的流入时间、波幅、转折高比值、重搏波、波型及幅波差均见明显的变化。
Total effective rate was respectively 97.1% and 83.3%. REG's inflow time, amplitude, turning point height rate, repulse wave, wave type and amplitude dispatch all had obvious changes.
当两个变量的比值互相影响时，如有了一个确定的速度，它可被理解为当分母在其区间内变化时分子也相应地变化。
When the ratio of two changes is involved, as it is in determining a velocity, it is understood that the change in the numerator "takes place during" the interval of the denominator.
渗出性心包炎虽有心胸比值缩小显著、但与其心腔内径变化不相关。
Although patients with exudative pericarditis showed remarkable reduction in cardiac shadow, they did not have any remarkable change in their cardiac chambers.
结果表明，波速度、介质密度对孔隙度的变化较为敏感，速度比值对饱和度的变化较为敏感。
The analysis result shows that velocity and density can sensitively reflect the change of porosity, and the velocity ratio can sensitively reflect the change of saturation.
晶须有白色，灰白色，灰绿色，深绿色等多种颜色，其颜色变化与原料中的硅炭比值有直接关系；
There are many kinds color such as white, grey green and dark green in SiC whiskers color which directly relate to the ratio of silica and carbon in the raw materials.
通过对管线仪特征比值定深法的分析，获取了特征比值与管线深度变化的关系；
By analyzing the characteristic ratio method of calculating underground pipeline depth, the relation between characteristic ratio and pipeline depth was obtained.
结论大鼠baep部分波幅比值和PL比值有显著的生后变化。
Conclusion Part of the amplitude ratios and pl ratios of BAEP of rats had significant postnatal changes.
在对不同药液引起的荷质比值的变化不作考虑的情况下，以水溶液代替药液，运用电晕充电法进行荷电喷雾，研究了测量系统对荷质比测量精度的影响。
By neglecting the value change of the charge to mass ratio caused by the different pesticide solution, the corona charging method was used with water solution replacing pesticide solution.
揭示了速比变化比值对齿面滑移及齿面接触应力特性的影响。
The influence of the variable ratio on the slip and contact stress is also discovered.
为了探求裂隙岩体渗流的变化规律，还对裂隙组不同相交角度和方向，以及渗透性比值对其影响做了比较计算。
In order to study the rule of seepage flow in fissured rocks, the influence of permeability of fissures in different intersection angles and direction is compared.
渗透率比值越接近，层间渗透率级差越小，采出程度评价参数曲线越平缓，变化幅度越小。
The closer the permeability ratio is and the smaller the permeability contrast is, the more gently the recovery evaluation parameter curve is and the smaller the range-ability of the curve changes.
批零系数是指同一时期批发销售额与零售销售额的比值，其变化反映了生产企业产品流通渠道长短的变化。
Wholesale and retail coefficient is the ratio of wholesale sales to retail sales at the same period and its change reflects the length of products circulation channel of production enterprise.
对于其它组中两个基因相对表达量的变化趋势基本一致，ATGL基因与HSL基因相对表达量的比值在0.61.5之间；
For other tissues, the trend of the relative expression of the two genes are consistent, and the ratio of ATGL and HSL gene is about 0.61.5.
结果表明，水稻田土壤有机碳、全氮和全磷含量水平均较高，水田改为旱地后土壤有机碳、全氮含量及C/N比值有较大幅度的下降，但全磷含量变化不大。
The results showed that the content of SOC, STN and STP had a high level in the paddy soil, but SOC and STN(except STP) decreased greatly after being changed to arid land.
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