Research and application of temperature balance control of multilevel-grouping heat-exchangers

On the other hand, in the reverse flow catalytic combustion system, the effects of operational parameters such as space velocity, toluene concentration and period duration on the shape of heat waves and the characteristic parameters such as peak temperature, average temperature were investigated.

另一方面，在流向变换催化燃烧反应系统中，系统考察了操作参数（甲苯浓度、空速及切换周期）对热波形状与特征参数（波峰温度、平均温度和移动速度）的影响。

Principle Component Analysis and Partial Correlation Analysis indicated that the meteorological factors could be classified into three groups, and daily precipitation, minimum daily temperature, average daily solar radiation and average daily vapor pressure deficit were four significant factors to determine daily stem growth.

主分量分析和偏相关分析表明，影响树干径向生长的气象因子可划分为3类，其中日降雨量、日最低气温、日平均太阳辐射和日平均空气饱和差是影响树干径向生长的主要因子。

Fever is this disease, all the major clinical manifestations of patients with the highest temperature of average 38.32+ 0.90 ℃, the average fever lasts for 80.51+ 41.60 hours, its thermal type is shown more irregular hot.

发热是本病的主要临床表现，所有患者平均最高体温达38.32±0.90℃，平均发热持续时间为80.51±41.60小时，其热型多呈不规则热。

Through calculations obtained were for the gas film-cooled flat plate without ribs and with 45o ribs a flow field distribution and the average temperature and average heat exchange factor at the flat plate inner and outer surface.

计算获得了无肋和带45°肋气膜冷却平板的流场分布和平板内外表面的平均温度和平均换热系数。

The results obtained showed that ( 1) walnut tree could not sprout when some factors such as average day temperature, average day ground temperature, average day evaporation, average day wind velocity and atmospheric humidity changed greatly;

结果表明：（1）日平均气温、日平均地温、日较差、日蒸发量、日平均风速、大气湿度等因子在达到任一极端值时，均不能使核桃幼树抽条；

By the bilinear flow solution of finite-conductivity vertically fractured gas well, which is combined with the arithmetic of average temperature and average compressibility, the well head flowing pressures are calculated and matched by program.

用双线性流阶段的井底压力解方程、平均温度和平均压缩系数计算法（即压裂气井不稳定渗流法）可以预测华北大牛地低渗气藏压裂井合理产量；

Maturity period average temperature, average sunshine hours, average sunshine whole radiation, May average temperature, average relative humidity and June-July temperature was an important factor which affected the accumulation of flue-cured tobacco chemical compositions.

成熟期的平均气温、平均日照时数、平均日照全辐射，团棵期的平均气温、平均相对湿度和旺长期的气温是影响烤烟化学成分积累的重要因子。

There was a positive correlation between protein content and average daily temperature and average sunshine time during heading to maturation, but a negative correlation existed between protein content and average diurnal variation of temperature in this period.

蛋白质含量与抽穗－成熟期间的平均日均温和平均日照时数呈正相关，与平均昼夜温差呈负相关。

The correlations of average temperature, average maximum temperature, annual sunshine hours, average wind speed, average relative humidity, annual rainfall, annual evaporation and altitude with ET_0 were analyzed.

并分析了平均气温、平均最高气温、年日照时数、平均风速、平均相对湿度、年降水量、年蒸发量、海拔高度与ET0的相关性，各站ET0与平均相对湿度相关性最好；

The period of germination was the most good time about 18 ℃ of the day temperature on average and at 30 ℃ of the highest day temperature in fore-april to end of mid-may.

4月上旬到5月中旬末，日平均气温在18℃左右，最高气温在30℃左右，为最佳出苗期。

In wireless sensor networks, the users often submit spatial window queries to obtain the summary information of a local area in the network such as maximum temperature, average humidity, et al.

在无线传感器网络环境中，用户经常提交空间范围查询以获取网络某局部区域的统计信息，如最大温度、平均湿度等。

The content of protein correlates positively with the daily average temperature and average monthly daylight length, and correlates negatively with average rainfall at the stage of flowering to maturity.

蛋白质含量与开花成熟期的日平均气温和月平均日照时数呈正相关，与开花成熟期的月平均降雨量呈负相关。

In the last part, we predict the main meteorological factors which are temperature, average humidity and barometric pressure station of the Anhui region with the thought of the above model.

第三个部分则通过上述模型的思想来预测安徽地区的主要的气象因子：气温、平均湿度和气压。

The main parameters such as air-gas ratio, gas amount, gas pressure and operating period etc. were optimized so as to increase hot blast temperature by average 50 ℃.

重点优化了空煤比、煤气量、煤气压力和热风炉合理工作周期等关键参数，研究结果使风温平均提高50℃。

With the condition of table 4.3, with increasing of temperature the average reflectance value decreases and the minimum reflectance point moves towards red direction.

随着温度的增加薄膜的平均反射率降低并且反射低谷向长波方向移动；

With increasing down-hole temperature, average track lengths also decrease, however, annealing anisotropy of fission tracks in apatite increases.

磷灰石中古裂变径迹的长度也随井温升高而减小，而磷灰石古径迹退火的各向异性却随井温升高而增大。

The effect of temperature, average residence time and density of sulphate acid were discussed on nucleation rate, growth rate and crystal shape.

分别讨论了结晶温度、平均停留时间、硫酸质量分数等因素对结晶成核速率、晶体成长速率以及晶体形状、大小的影响。

The main climate factors influencing growth of slash pine are average annual temperature, average temperature in January and annual rainfall.

影响湿地松生长的主要气候因子是年平均气温、1月平均温度和年降雨量。

The effect of the adiabatic flame temperature and average bulk gas temperature is considered for radiative heat rtansfer;

辐射传热考虑了绝热火焰温度和平均气体温度的影响；

The added temperature is average 1. 76 ℃. about the scope of 100 km in Shihezi Area;

石河子地区100km范围内沙漠对绿洲的增温平均1.76℃（1～2℃）；