diurnal variation

The result indicates that, due to the diurnal variation of the geomagnetic field, the environmental magnetic field is hard to be measured directly at the distance of more than 300m away from the railway.

实测结果表明，由于离开铁路300m以远的环境磁场受地磁场日变化的影响已经无法直接准确获得，因此用理论方法计算显得十分重要。

Diurnal variation of water and heat flux under transient water stress in a winter wheat field

冬小麦农田暂时水分胁迫状况下水、热通量日变化

Study of diurnal variation of photosynthetic efficiency in Chinese Cabbage under field conditions

田间大白菜光合效率日变化的研究

Effects of Shading on Diurnal Variation of Leaf Photosynthesis and Water Use Efficiency for Cigar Rapper Tobacco

遮荫对雪茄外包烟叶光合和水分利用效率日变化的影响

The characteristic of diurnal hourly wind speed variation has been thoroughly analyzed.

该文简述了短期风速预测的价值和方法,分析了小时风速的日变化特点.

The diurnal variation of both TER and temperature showed a single peak pattern.

TER日变化规律与温度一致，表现为单峰模式。

While female display, more rates than male with the symptoms of attempted suicide, psychic anxiety, somatic anxiety, general somatic symptoms, diurnal variation.

女性患者在自杀意念、精神性焦虑、躯体性焦虑、全身疲乏、晨夜夕轻症状出现频率多于男性，但无统计差异。

After analyzing the 11-yr, 27 days and diurnal variation of upper atmosphere caused by solar activity, a calculation method for MET model atmosphere density is presented in which solar activity is taken into account.

该文分析了高层大气与太阳活动有关的11周年变化、27天变化以及周日变化，讨论了考虑太阳活动的MET模式大气密度计算途径，并且介绍了卫星大气阻力加速度模型。

The results showed that the diurnal variation of Choerospondias axillaries transpiration rate appeared in parabola, low in the morning and evening, and high at noon.

结果表明，蒸腾速率具有明显的早晚低、中午高的日变化特征，但在不同日期蒸腾速率日变化曲线存在一定差异，且在旱季晚间23：30后仍有茎流现象。

The diurnal variation of WUE was a concave curve with the highest in the morning, the lowest at noon and high in the afternoon.

杏各品种的WUE日变化总体表现为上午最高、中午最低、下午较高的凹型曲线，但品种间在曲线变化和日均值方面也存在差异。

Study on Diurnal Variation of Photosynthesis and Environmental Factors in Scutellaria baicalensis

黄芩光合作用日变化及其与环境因子关系的研究

Monitor Research on Diurnal Variation Characteristics of Vertical Water Content Experiment in Unsaturated Zone

包气带垂向含水率日变化特征试验研究

Diurnal variation of photosynthesis of of F. pashannica seedlings was single peak type.

巴山水青冈幼苗的光合日变化为单峰型曲线.

The impact of the diurnal variation of solar radiation on the climate modeling

太阳辐射日变化对气候模拟的影响

The development of visualized editing software for magnetic diurnal variation

磁日变可视化编辑软件的开发

The selection of base value is critical to the geomagnetic diurnal variation correction in marine magnetic survey.

地磁日变基值的选取是海洋磁力测量地磁日变改正的重要内容。

But below the UCL the monthly mean wind speed has much less diurnal variation, it is a typical structure of half sine wave.

而城市冠层47m以下风速的月平均日变化为典型的正弦半波结构，各月份的差异较小。

This paper deals with the study of the spatial distribution of the amplitude of diurnal variation of geomagnetic vertical component in China, based on the data recorded at some Chinese geomagnetic stations, using the method of analysis of solar daily variation of geomagnetic field in local regions.

本文利用我国部分台站地磁垂直分量日变幅的资料，采用局部地区日变场的分析方法，研究了地磁垂直分量日变幅在中国地区的空间分布特征。

Diurnal variation in gas exchange, water potential and light response curve in two sugarcane varieties

甘蔗叶片气体交换及对光的响应和水势的日变化

The curve of diurnal variation of leaf photosynthesis showed two single peak.

随着灌水量的降低,其净光合速率日变化呈双峰曲线.

Estimating Diurnal Variation of Winter Wheat Canopy Resistance at Different Growth Stages

冬小麦冠层阻力日变化的估算

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 magnitude and diurnal variation of the turbulent drag coefficient CD and bulk transport coefficient of heat ( or moisture) flux, CH ( or CE).

利用气象铁塔的风、温梯度资料，对陆面上近地层湍流拖曳系数CD和总体输送系数CH（或CE）的大小和日变化规律进行研究。

Either enviromental factors such as intensity of light, CO2 concentration, temperature and relative moisture of soil, or interior factor such as the fruit in the axil exerted significant effects on photosynthetic rate except photosynthetic type of diurnal variation.

光照强度、CO2浓度、温度及土壤湿度等外界环境条件，以及黄瓜叶腋负载果实与否的内在因素对光合速率有明显影响，对光合速率日变化类型无影响。

The sidereal diurnal variation of cosmic ray ties up with the most basic and important problem in cosmic ray physics such as the origin, propagation and the acceleration mechanisms of cosmic ray.

宇宙线的恒星日变化紧密联系于宇宙线的起源、其传播途径的性质，以及宇宙线的加速机制等宇宙线物理中最基本的重大问题。

Diurnal variation in net photosynthetic rate and respiration rate of plant leaf under natural conditions

自然条件下植物叶片CO2同化率昼夜变化的生理生态特性

Equatorial counter electrojet and the diurnal variation of the Qiongzhong magnetic observatory

赤道逆向电射流对琼中台地磁日变化的影响

Base Value Reduction Methods with Multi-station Diurnal Variation Correction in Marine Magnetic Survey

海洋磁力测量中多站地磁日变改正基值归算

Gross transpiration was simulated by a polynomial and converted scale from the transpiration rate determined by a porometer. All diurnal variation curves of transpiration rate s simulated were significant ( P < 0.05). The daily transpiration of A.

将气孔计测定的蒸腾速率依次进行了单位换算、多项式拟合日变化曲线和尺度转换求得日蒸腾量，拟合的日变化曲线均达到显著水平（P<0.05）；

In August, the diurnal variation of Pn showed one peak curve with the most value at 12: 00 and presented indention curve in June, July and from September to November.

内膛叶Pn的日变化规律在8月为单峰曲线，最大值出现在中午12∶00，6、7、9-11月则为锯齿型曲线。