相机的测光方式要设置在局部测光或点测光方式，测光点对着你想要锁定曝光值的目标，按下锁定钮。
To make this work, use the partial metering mode (or spot metering mode) over the subject where you want to lock the flash output then press the asterisk (*) button.
提出一种使原子吸收与原子共振荧光光谱分析均能得到与被测元素浓度成线性关系的消光值的方法。
This paper introduces a new method which can obtain the extinction value linear to the concentration for the atomic absorption spectrometry (AAS) and atomic resonant fluorescent spectrometry (ARFS).
请注意，当引用灰阶图像文件，关于编码灰阶值的线性光值的转换曲线，必须考虑到计算时的颜色通道。
Note that when referencing a grayscale image file, the transfer curve relating the encoded grayscale values to linear light values must be taken into account when computing the color channels.
对乙偶姻二聚体结晶的研究表明，乙偶姻的旋光值对二聚体的结晶得率影响很大，旋光值越接近于零，结晶得率越高。
The study on acetoin crystallization dimer showed that the yield of acetoin-dimer was affected by the optical rotation of acetoin.
若这个常数呈现不同值时，光的波长也将变化。
If it were to take on a different value, the wavelengths of these lines would change.
精确定量满月时的曝光时间不好捉摸;如果景物有散射并且直接受光，那么就在ISO 100下使用f/2.0和30秒曝光作为初始值，然后向上图的1——4四个方向进行调节。
Gauging exposure times during a full moon can be tricky; use f/2.0 and 30 seconds at ISO100 as a starting point (if subject is diffuse and directly lit), then adjust towards scenarios 1-4 accordingly.
对于光顺算法，本文中不采用光顺平铺边界，而是采用光顺权值差2的内部边界。
The interior boundary with the difference of fairing power being 2 replaced the paving boundary in the fairing step.
发现在旁轴近似下，匹配函数的最大值随泵浦光发散角的增大而增大，在考虑到像散的影响后，得到泵浦光发散角的参考值。
At paraxial approximation the maximum of the matching function is increasing with increased divergence Angle. For different brightness of pumping light, the optimum value of the Angle is obtained.
最后建议对于道路照明计算应采用由反应时间法获得的光视效能最大值计算式。
At last, it was proposed that equation derived from reaction time should be used in road lighting calculation.
得到了在光纤中传输的脉冲光功率的系综平均值和输出脉冲宽度的均方根值的近似解析公式。
Formulas are derived for the ensemble average of the pulse power and the RMS pulse width.
上述试验结果表明，可以用等离子体光信号的幅值高低和波动大小作为焊接质量实时监测和控制的特征信号。
The experiments indicate that the amplitude of plasma optic signal and fluctuation can be used as characteristic signal for real-time monitoring and control for titanium laser welding.
计算值与紫外光谱数据是一致的，与分子晶体的x——光衍射实验数据是印证的。
The calculated value is found to agree with the Ultraviolet spectrum data and the X-ray diffraction data for the molecular crystal.
通过界面双电层电容值的变化来解释脉冲电化学光整加工提高精度的根本原因；
The reason for the improvement of precision by the EP is the change of double layer capacity value.
本文报道了采用甲醇从红甜椒中提取甜椒红色素的工艺，并对P H值、光、热等因素对其稳定性的影响，作了较深的研究。
The extraction of red pigment from red sweet pepper with methanol was reported. Effect of the PH value, heat and sunlight on the stability were researched in depth.
然后用相同的小波基对给定的环境光做小波变换，只保留其中绝对值较大的系数，从而得到环境光的非线性逼近。
Then, it approximates the environment map in the same wavelet basis by keeping only the largest terms to get a non-linear approximation of the environment-map.
该表达式适用于光泵脉冲宽度与激活介质上能级寿命比值为任意值的情况。
This analytical expression is valid for arbitrary values of the pumping light pulsewidth and the upper laser level lifetime.
本文提出了一种改进的分段二次插值法描写光学系统的光瞳形状，得到了满意的效果，其坐标误差小于1%，面积误差约0.25%。
A modified segmental quadratic interpolation method which describes the shape of optical system pupil with relative coordinate error less than 1% and area error about 0.25%, is presented.
高转换效率的信号光输出取决于抽运光和初始信号光的强度及晶体长度的最佳优化值。
The signal power output of high conversion efficiency is depended on the optimum crystal lengths, pump intensity and signal power.
对两束相干光写入稳态相位栅的衍射效率进行数值模拟，发现在某一角度范围内衍射效率有一最大值存在。
Diffraction efficiency was simulated theoretically in the stable state phase during the double coherent light coupling and a maximum value of diffraction efficiency was discovered in some Angle scope.
然后通过在色度平面上的分析，估计入射光的色度值。
The estimation of the chromaticity of the incident light is calculated on the chromaticity plane.
利用二值化联合变换相关技术成功地设计了一个单空间光调制器、单ccd的光电混合实时指纹识别系统。
A real time fingerprint identification system using binary joint transform correlator with a single space light modulator and a single CCD has been developed successfully.
只要选用相应的目标函数，曲面插值、逼近、拼接和光顺都可以使用优化技术统一处理。
Optimization techniques are being applied to solve the problems of surface interpolation, approximation, smooth joining and fairing, aiming at corresponding goal functions.
陨石热释光研究揭示了陨石中自然TL值取决于陨石暴露在宇宙空间时的宇宙射线辐照和自身热衰变之间的平衡。
Thermoluminescence studies of meteorites suggest that the level of natural TL in meteorites is determined by competition between build up, due to exposure to cosmic radiation, and thermal decay.
运用当地时间步长、隐式残值光顺、焓阻尼等措施加速计算收敛。
Local time step, implicit residue averaging, enthalpy damping are used to accelerate the convergence.
常用的三次样条曲线几种端值条件如简支端、抛物端已不能完全满足曲线光顺的要求。
Several commonly adopted end value conditions for cubic spline do not meet the requirements of curve fairing completely.
三值光编码、解码器和三值逻辑运算器是三值光计算机关键部件，是实现三值光计算机其它部件的基础。
Ternary optical coder , decoder and ternary logical calculus belong to key components of ternary optical computer, and they are the base of implementing other components of the optical computer.
受激射效应影响，消光比及频率啁啾在弛豫振荡频率处达到极大值。
Due to the lasing effect, the peak modulation frequency of extinction ratio and chirp occur at the relaxation oscillation frequency.
本文从样条曲线精密光顺准则出发，提出一个新的端值条件——等外力端的概念、分类和处理方法。
A novel end value condition, i. e. equal exterior force end, and its concept, classification and processing method are presented on the basis of strict fairing criterion for spline curves.
计算结果和测定值的旋光方向完全一致。 旋光度数值都在可接受的误差范围内。
The values of calculation are nearly consistent with that of determination, the deviations are within accepting error and both rotatory directions are completely consistent.
计算结果和测定值的旋光方向完全一致。 旋光度数值都在可接受的误差范围内。
The values of calculation are nearly consistent with that of determination, the deviations are within accepting error and both rotatory directions are completely consistent.
应用推荐