饱和差

利用彭曼公式计算80年代以来黄河上游流域蒸散量，分析了该地区蒸散量、日照时数、气温、空气饱和差等气候因子的变化趋势，并着重研究了诸因子对蒸散量的影响。

Penman formula was used to calculate the evapotranspiration in the upper valley of the Huanghe river since 1980.The variation tendency of some climatic factors , such as evapotranspiration , sunshine duration , air temperature , air saturation deficit and etc , were analysed .

空气饱和差也以每年0.02hPa的速度递增。

Air saturation deficit is increasing with 0.02 hPa / a.

此外，白天CO2通量对气温及空气饱和差的响应均拟合了二次曲线模型。

In addition , the diurnal CO2 flux and the air temperature or VPD fitted a quadratic curve model . 4 .

针对温室的小气候条件，以生长期的黄瓜作为测试对象，分析了太阳净辐射（Rv）和水汽饱和差（VPD）对叶片温度的影响。

The influence of net radiation and VPD on leaf temperature of cucumber grown in greenhouse was studied .

林冠层的VPD（空气饱和差）对SFD有显著影响；

SFD was highly correlated to water vapor pressure deficit ( VPD ) of ambient air near the canopy layer ;

采用逐步回归分析表明，水汽饱和差（VPD）和光量子通量密度（PFD）是影响光合速率的主导因子。

Vapor pressure deficiency ( VPD ) and photo fluid density ( PFD ) were dominantly influencing factors of net photosynthesis rate as shown multiple stepwise regression analyses .

给水度与饱和差关系的初步研究

Study on the Relation between Specific Yield and Saturation Deficiency

一种空气饱和差区域分布的推算方法

A method for computation of regional aerial saturation deficiency

冬小麦瞬时水分利用效率与饱和差呈极显著负相关，达到0.01显著水平。

Negative correlation between Instantaneous WUE and saturation deficit was significant at 0.01 level .

通过对给水度与饱和差的理论分析，明确了给水度与饱和差在基本概念上的差别；

Through theoretical analysis , the differences in the basic concept between specific yield and saturation deficiency are specified ;

太阳总辐射、二氧化碳浓度、空气饱和差及土壤水分等环境因素以不同机制及过程影响水分利用率。

The water use efficiency was affected by the factors such as global radiation and CO 2 concentration and air saturation deficit etc.

作物夜晚的蒸腾变化主要受气温、风速、空气饱和差等因素的影响。

On the other hand , in nighttime , the transpiration mainly depend on temperature , windspeed , and saturation vapor pressure , etc.

影响水稻需水量的主要因素有气温、水面蒸发、空气饱和差、日照和风速，这几个影响因子之间存在着相关性。

The main factors which impact water requirements of paddy are climate , air saturation difference , wind velocity , sunlight and evapotranspiration among which there is multi-collinearity .

冠气温差与空气饱和差、大气湿度、气温和辐射的相关系数分别为-0.65、0.58、-0.53、-0.35；

The correlation coefficients between canopy-air differences , VPD , atmospheric humidity , air temperature and radiant intensity were - 0 . 65 , 0 . 58 , - 0 . 53 , - 0 . 35 , respectively .

计算结果表明，冠层净辐射强度和空气饱和差对蒸散率影响较大，而气温和风速的影响相对较小。

The calculation results showed that the neat radiant intensity Rn and the saturation difference of the atmosphere Da exert significant influences on the evapotranspiration while the effects of the atmospheric temperature Ta and wind speed Vz are relatively small .

用彭曼原式和修正式计算干旱地区的蒸发力，个别月份误差较大。利用空气饱和差拟合得到的经验计算公式效果最佳

The calculation error of evaporation power in arid area for few months in relatively high when the evaporation was computed with Penman ′ s original-formula and modified formula It is optimum that the experience formula is obtained by air saturation difference fitting

得出了饱和差通常是大于给水度而小于孔隙度，以及只有在岩土体积含水率达到持水度时饱和差与给水度才相等的结论；

The conclusions are drawn that saturation deficiency is generally greater than specific yield and smaller than porosity and that only when the moisture content in the rock soil volume is equal to specific retention , saturation deficiency is equal to specific yield ;

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。

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 .

结果表明，绝热饱和温度差是影响脱硫效率的决定性因素，固体浓度是保证系统稳定运行的关键因素。

The experimental results show that approach to saturation temperature is the key factor on efficiency and solid concentration is the important factor that affects the stability of system .

硼砂饱和溶液的差示FTIR光谱和Raman光谱分析

Differential FTIR and Raman Spectroscopic Analysis of Saturated Aqueous Solution of Borax

同时，对影响土壤蒸发的外界因素进行了分析。结果显示，气象因素中相对湿度、饱和水气压差和辐射同土壤蒸发有着密切的关系，在P

The study on factors effecting the evaporation of soil shows that the relative moisture , vapor pressure difference and radiation are major factors . They always connected water with their attitude . Study on the Relation between Specific Yield and Saturation Deficiency

记录了硼砂饱和溶液的差示FTIR光谱和Raman光谱，分别对其FTIR吸收波数和Raman位移进行了归属。

The differential FTIR spectroscopy and Raman spectrum of saturated aqueous solution of borax have been studied . The assignments of the recorded FTIR frequencies and Raman shifts are given .

随着盐分浓度的增加，各竹种的净光合速率、气孔导度、胞间CO2浓度和蒸腾速率均呈下降趋势，而饱和水气压差均有增加的趋势。

Under the NaCl stress , with the increasing of salinity , the net photosynthetic rate , the stomatal conductance to H2O , the inter-celluar and transpiration rate decreased while vapor pressure deficit based on Leaf temperature increased .

据此建立了充分供水条件下冠气温差与饱和水汽压差的关系方程，作为基线方程，计算不同灌水处理的冬小麦旺盛生长期间水分胁迫指数（CWSI）。

A baseline equation of Tc - Ta with VPD was established to calculate the Tc - Ta under non-water-stressed condition for the purpose of calculation of crop water stress index ( CWSI ) .

增益饱和对光学差频产生太赫兹辐射的功率和稳定性的影响

Effects of gain saturation in terahertz radiation based on difference frequency generation

适用于宽带太赫兹辐射体系的高分子电光材料的研究增益饱和对光学差频产生太赫兹辐射的功率和稳定性的影响

Study on the Electro-optic Polymers for Broadband Terahertz Generation Effects of gain saturation in terahertz radiation based on difference frequency generation

这是由于材料中的顺磁相在低温时变成铁磁相，使两相的饱和磁化强度差减小的结果。

This fact is duo to the transition to ferromagnetic phase from paramagnetic phase and to the reduction of the difference of magnetization .

网室内外小气候要素（相对湿度、温度和饱和水汽压差）的差异随着风速的增加而减小；

The differences in relative humidity , temperature and vapor pressure deficit between inside and outside the screen-house decreased with the wind velocity increasing .

干热季林冠上湿度变化范围为26.5%~97.2%，饱和水汽压差数值大小介于0.3~30.5hPa之间；

In the dry hot season , relative humidity and water vapour deficit varied from 26.5 to 97.2 % and from 0.3 to 30.5 hPa , respectively ;

水稻气孔阻力与相对湿度、土壤含水量、叶气温差和光强呈现负相关，与饱和水汽压差、温度呈现正相关。

The stomatal resistance is negatively correlated with relative humidity , soil moisture , leaf-air temperature difference and light intensity and positively correlated to vapor pressure deficit and temperature .