With the increasing of weir height , the pressure drop increases . and it is independent of bare tower velocity and plate dimension . the correlation before was corrected as follows : pl 3911z this paper analyzed the heat transfer coefficient between the outer wall of heat tubes and cooling water 堰高越高，换热系数越大；在鼓泡范围内，空塔速度越大，换热系数越大；在本实验条件下，热流密度在10kw / m2附近换热系数达到最大值。
When the heat transfer coefficient of water fluid is less than 500 w / m2 ? k , cop increases with the increasing of the heat transfer coefficient of water ; cop almost keeps a constant with the increasing of the heat transfer coefficient of water fluid if that is over 500 w / m2 ? k K时,对流换热系数增加,系统cop增大,当h大于500w / m2 ? k时,对流换热系数增加,系统cop基本不变;随着管径的增加,系统cop先增大后减小,当管径d = 80mm时,系统cop达到最大值。
It was found that both number and sizes of the silicon particles are increased and the ratios of electric to thermal conductivity were decreased with the increase of the silicon content . the maximal seebeck coefficients occur when the si : fe mole ratio are between 2 . 0 and 2 . 1 发现随着si含量的增加，弥散分布的si颗粒增多，颗粒尺寸增大， “电导率/热导率”比值降低，但seebeck系数呈现先增加后减少的趋势，在si : fe摩尔比为2 . 0 2 . 1时达到最大值。
The distribution of the gas - flow speed is measured at a position 1cm away from the outlet ( the end with larger air - gap ) . it is illustrated that the gas - flow speed keeps increasing from the out surface of the inner sleeve to the inner surface of the outer sleeve , and then it decreases gradually 测量了楔形气隙流体出口(大间隙端口)外1厘米处空气流速大小的分布，发现空气流速自转子(内筒)壁面处开始逐步增大，至定子(外筒)壁面处达到最大值，随后开始减小。
If the soil water content is gradually added from very little value , the value of water content gradient resulted from temperature gradient first is lower , then bigger and finally lower . based on the test data , a linear regression equation about temperature and water content is got . after deciding the temperature and moisture distribution of the soil samples , the problem of coupled thermal and moisture is discussed , the temperature distributions show that the heat - conducting coefficient is related to the density and water content 由温度场的分布可以得到：在温度梯度的作用下，导热系数是变化的，而导热系数沿长度方向的变化，使得稳态温度场沿长度方向成非线性分布；密实度对温度场分布的影响是干密度越大导热系数越大；初始含水量对温度场分布的影响是含水量增大，导热系数也增大，达到最大值后，含水量增加导热系数反而减少，含水量对温度场的分布有显著的影响。
Carbon plasma immersion ion implantation ( piii ) into the porous silicon has been studied for the first time , and obtained intense blue light . the effect of annealing temperature on the luminescence has been investigated and results show that the luminescence intensity of sample reaches maximum after annealed at 4000c 首次研究了碳等离子体注入对多孔硅的改性，得到了强蓝光发射，详细研究了退火温度对发光强度的影响，发现在400时达到最大值，并探讨了相关的机理。
The variation curves of yield and grain protein content with soil water content ( or nitrogen ) were convex in high fertility ( or soil water content were 70 % and 80 % of field maximum moisture capacity ) , and the soil water content ( or nitrogen levels ) before maximum protein content ( or maximum yield ) were the soil water content ( or nitrogen levels ) of coordinated variation of yield and grain protein content . [ conclusion ] coordinated variation of yield and grain protein content was possible in suitable condition 在高肥和土壤水分含量为田间最大持水量的70 %和80 %条件下，产量和蛋白质含量曲线均为凸型，蛋白质含量达到最大值之前对应的土壤水分含量为高肥条件下产量和蛋白质含量协同变化区间；产量达到最大值之前对应的施氮量为土壤水分含量为田间最大持水量的70 %和80 %条件下产量和蛋白质含量协同变化区间。
( 2 ) taking the geology analysis as main way and combining the pre - test , predicating the tunnel ' s main geology condition ( rock quality , surrounding rock classification , long - wide joint , fault , ground water , crustal stress ) , and predicating the main potential disaster ( collapse , breaking water , rockburst , large deformation ) ( 3 ) employing the stress test result and inverse analysis of the stress field , finding out the crustal stress " s distributing rule along the tunnel axes section : the highest crustal stress is 24mpa near the deepest spot , and predicting that the k2 + 260 ~ k3 + 000 likely to be the high crustal stress segment for this tunnel 通过地质分析、类比分析、监控量测、数值模拟、神经网络等方法，对鹧鸪山隧道潜在的主要地质灾害(塌方、涌水、岩爆和大变形)进行了预测预报( 3 )在现场地应力测试成果的基础上，运用数值计算进行应力场反演，基本查明了沿隧道轴线剖面的地应力分布规律：地应力量级在最大埋深附近达到最大值24mpa ，并预测k2 + 260 k3 + 000段将很可能成为鹧鸪山隧道的高地应力段。 ( 4 )塌方往往与断层破碎带及千枚岩相联系。
