查询词典 light intensity

The key components in laser gyro is He-Ne ring laser, and the reciprocal action theory between light and medium is the base in studying the ring laser, use the Lamb half classical theory, and on the base of density matrix theory, the optical Brounch equation was established, which described the movement of amplifying medium atom in the ring syntonic cavity, and according to the medium polarize theory the self consistent equations was deduced, which describe the light intensity and phasic of the counter-propagating wave. On the basis of this equations, adopted the simulation software MATLAB and virtual instrument programming language LabWindows/CVI, we can do some simulated experiments in study the phenomenas such as amplify and dispersive characteristic of medium, mode pushing effection, burned hole effection and pattern competition, lock-in of frequency and the characteristic of light intensity and phasic of the counter-propagating wave in laser gyro.

激光陀螺的核心部件为He-Ne环形激光器，而掌握光与介质的相互作用理论是研究激光器的关键，采用拉姆半经典理论为主，在密度矩阵理论的基础上，推导环形谐振腔中描述He-Ne气体增益介质原子运动的光学布洛赫方程，运用介质极化理论得出描述激光陀螺反向行波的光强、位相所满足的自洽场方程组，在此基础上，运用MATLAB仿真软件和虚拟仪器编程语言LabWindows/CVI，对激光陀螺中的介质增益色散特性、频率牵引效应、烧孔效应及模竞争、闭锁效应及环激光的光强和相位特性进行仿真试验研究，并且运用全量子理论，对激光工作原理进行分析，得出二能级系统单模辐射场的光子数密度分布，得出激光场的光子统计分布，仿真激光场的动态建立过程。

The results showed:（1）Accompanied with decreasing of light intensity, leaf length, width and leaf thickness of Dichondra repens increased initially and then decreased. They were up to the peak under 76.19 % transparency. The length of petiol extended with the decreasing of light intensity, but the leaf morphology of Dichondra repens was no significant effect.

结果表明：（1）随着光照强度的降低，马蹄金叶片的长度、宽度及厚度均表现出先增大后减小的趋势，在76.19％光照强度下达到最大值；叶柄长度随着光强的减弱而增长，叶片的形态并未发生显著变化。

According to the angular spectrum theory, the Fraunhofer diffraction light intensity distribution of the equilateral triangle and the equilateral hexagon is calculated by computer, the characteristics of their light intensity distribution is analyzed and contrasted, and it is proved by experiments.

根据衍射角谱理论，利用计算机数值计算了由正三角形和正六边形组成的衍射平面的夫琅和费衍射光强分布，分析并比较了两者的衍射光强分布特点，并用实验验证了上述数值计算的正确性。

As pairs of connected ramets were subjected to reciprocal patchiness of light and nutrients, stolon connection between the two ramets significantly enhanced biomass of both ramet growing in low light intensity but high soil nutrient condition and ramet growing in high light intensity but low soil nutrient condition as well as whole ramet pairs (consisting of LH ramets and HL ramets).

当生长于高光照低养分条件下分株与生长于低光照高养分条件下分株之间的匍匐茎连接时， 3种克隆植物HL分株、LH分株以及整个分株对系统(HL分株+ LH分株)的生物量均得到显著提高。同时， LH分株根冠比显著增加，而HL分株根冠比显著下降。

Then the light intensity transmission of polarizing prisms with the incidence of random spatial light beam is studied. Both experimental and theoretical results indicate that the light intensity transmission of air-spaced polarizing prisms are affected more by the change of random spatial incident angle than dielectric-spaced polarizing prisms.

结果表明：胶合层间的多光束干涉对棱镜光强透射比的影响不可忽略，对于空气隙型偏光棱镜，由于空气隙间多光束干涉的影响，光强透射比随任意角度变化较大，而用胶合介质胶合的棱镜，其透射比对空间入射角不是很敏感。

Armillary light source could provide light intensity from surrounding to center, and the intensity of light changed gradually.

固定数码相机拍摄设置，在同样光强度但投射方向不同下拍摄同一色标，比教色标上同样点的色度值，检测色度值是否发生变化及其规律。

The photosynthetic rate is the highest at 40μmol/m^2s. The light intensity for photosynthesis of Batrachospermum longipedicellatum. is saturated light intensity. The light compensation points increase with the rise of water temperature. They are 4.5, 5, 5.6, 6 and 7μmol/m^2s at 5℃, 10℃, 15℃, 20℃ and 15℃ respectively.

长柄串珠藻的光补偿点随温度的升高而升高，5℃、10℃、15℃、20℃和25℃的光补偿点分别为4.5μmol/平方公尺s、5μmol/平方公尺s、5.6μmol/平方公尺s、6μmol/平方公尺s和7μmol/平方公尺s。

In the course of testing, the laser was used as light source with twin-light path, dispelled the error of light-intensity variation of traditional detection devices, the measurement result only relates to the relative change of optical intensity .

测量以激光为光源，采用双光路法，消除了通用检测仪由于光源光强不稳定产生的误差，使得测量结果只与光强的相对变化量有关；光波出入波导均采用棱镜耦合，减少了普通测试方法因样品质量及面形误差和端面洁净情况不同或输出透镜不能很好汇聚光波而产生的误差；利用常规仪器设备实现了数字化检测显示，避免了人为主观读数产生的误差；利用AD538实时模拟计算芯片，提高了计算精度和运算速度。

Then the waveband was divided into two parts to develop calibration model using partial least square method for soluble solids content to remove the effect of the skin and the results indicated that the measurement results was not be enhanced. However, the difference of calibration results in the wavelength of 650-950nm with the r of 0.949, the RMSEC of 0.292 for intact watermelon and with the r of 0.973 and the RMSEC of 0.214 for skin-peeled watermelon indicated that the influence of skin is not very serious and the intact watermelon spectra also can get satisfied calibration result. 5. Vis/NIR spectroscopy nondestructive detection needs high-energy light source, so differences of diffuse transmittance spectra with different light intensity (600W, 1000W) were detected and effects of light intensity on spectra and calibration results were compared.

针对西瓜果皮较厚的特点，对去皮西瓜与带皮西瓜进行对比试验研究，发现果皮对光谱的影响主要集中在可见光部分(650-750nm)，对可溶性固形物含量采用偏最小二乘法进行分段建模并没有有效消除果皮的影响，对比研究去皮西瓜与完整西瓜光谱在650-950nm范围内的建模结果，完整西瓜二阶微分光谱校正模型相关系数r为0.949，RMSEC为0.292，去皮西瓜校正模型相关系数r为0.973，RMSEC为0.214，果皮对建模结果的影响并不严重，完整西瓜的建模结果可以满足检测要求； 5。

Shading experiments were designed according to low light intensity problem caused by intercropping system of peanut with maize or wheat et al. Fenghua1 and Fenghua2 were adopted in the experiment of four light intensity levels (CK in which the plants were grown under natural light, 27% shading, 43% shading and 77% shading), which carried out at three growth stage using black sunshade net. And the three stages were seedling phase, pod-setting phase and pod-maturing phase. The aim of this study was to investigate the effects of low light on the photosynthetic characteristics, luminous energy distribute of PSⅡ, RuBPCase activitiy, plant morphogenesis, dry matter production, pod yield and quality of peanut at different stages, defined the relationship between dry matter accumulation and PAR, relationship of efficiency for solar energy utilization and PAR, and then set up the ...dry matter production and yield formation model on the basis of the experimental data.

针对花生与玉米、小麦等作物间作、套种造成遮光问题，选用大花生品种丰花1号和小花生品种丰花2号做为供试材料，在花生苗期、结荚期和饱果期分别用不同透光率的遮阳网进行遮光处理模拟弱光条件，设置自然光、遮光27%、遮光43%和遮光77%四种光强水平，研究了光强处理对花生光合特性、光系统Ⅱ光能分配、RuBPCase活性、植株形态建成、物质生产和产量以及品质的影响，明确了不同时期干物质积累及光能利用率与光合有效辐射的关系，以此为基础采用2种方法建立了花生干物质生产动态模型和花生产量形成模拟模型，并对各模型的模拟精度进行了比较。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。