查询词典 threshold intensity

This problem is also important and valuable in Nonlinear Optics. It will be very helpful to understand how the aberrations affect the course of three- wave mixing, such as the change of conversion efficiency, the distribution of intensity and phase.Small signal solution of aberrated second harmonic generation is deduced from three-dimension three wave coupling functions. The numerical work gives out lot of results of different aberrations. The effects of the fundamental waves aberrations, which will change the conversion efficiency, distribution of intensity and phase in the frequency conversion, is analyzed. It shows that when walk-off and diffraction effects could be ignored approximately estimation of the phase distribution of second-harmonic wave could be done. The far field divergent angle and second moment radius of harmonic wave will vary with the aberration of fundamental wave, but the far field divergent angle will be obviously smaller than that of fundamental wave. The phase distribution of both fundamental and harmonic wave is measured using Hartmann-Shack wave front sensor in the experiment with 1064nm and 790nm lasers, respectively. Results are given.

首次从三维三波相互作用方程组推导得到了位相畸变光束倍频的小信号解；通过建立国防科学技术人学研究生院学位论文三维数值模型，编写相应仿真程序，首次得到了位相畸变光束倍频过程的大量计算结果，深入细致地研究了位相畸变光束经非线性光学频率变换后谐波的转换效率、光强分布、位相分布以及影响它们的各种因素；得出谐波的远场发散角和光斑二阶矩的变化规律会因为基波像差的不同而不同，但谐波的远场发散角明显地比相应基波的小的结论；得到了在走离效应和衍射效应等影响许多因素可以忽略的情况下，位相畸变传递到二次谐波的估算式；举例分析了KDP三倍频方案中，基波位相畸变对二次谐波和三次谐波的影响；实验工作中，用哈特曼一夏克传感器分别对IO64nm倍频过程和790飞秒超短脉冲倍频过程中的基波和谐波的位相分布进行了测量，给出了相应结果。

Numerical simulation shows that the location and intensity of the modeled high and low pressure centers is consistent with the observation. The pressure gradient intensity of cyclone closes to observation. The regional distribution, transportation direction, centers of the cold, worm advections have similar characters with fact. On the other hand, the temperature stratosphere simulation result is slightly bigger than the fact.

数值模拟结果表明，模拟高压、低压中心位置和强度与实况较为吻合，气旋的气压梯度强度与实况较为接近；冷暖平流在分布区域、输送方向、强中心位置上也与实况具有较相似的特征，但是温度平流模拟的结果在量值上略大于实况。

The stimulative intensity is the lower, the function of facial nerve is the better.when stimulative intensity is 0.05～1.5mA, The function of facial nerve may be 88.46% inⅠ、Ⅱgrade afters 12 months.

术末刺激强度在0.05～1.5mA之间，术后12个月面神经功能为Ⅰ、Ⅱ级者达88.46%。

Although the low intensity program was preferable to achieve maximum attendance, attenders on the high intensity program achieved higher heart rates.

虽然低强度的训练过程达到最大出席人数较令人满意，但高强度训练程序的出席者心搏率能达到较高的地方。

Effects of Stimulating Intensity and Exploiting Intensity on Physiological Parameters of Puncture Tapping on Mature Buddings

不同刺激强度和采胶强度对成龄芽接树针刺采胶生理参数的影响

Studies for three consecutive years (1977-1979) proved that, when proper stimulating intensity was used and the exploiting intensity was controlled in puncture tapping, mature buddings gave more yields than with the conventional tapping and approached the yield obtained by tapping with stimulation.

连续三年(1977—1979)研究表明，在合理的刺激强度与采胶强度调控下，成龄芽接树针刺采胶产量可超过常规刀割或接近刺激刀割水平。

Defining light intensity: Intensity is a measure of light power that is radiated from a surface or a source, and is measured in candelas per square metre (cd/m2), also known as Nit.

光强：光强是光源或物体表面放射出光的强弱的度量，单位每平方米烛光(cd/m2)，也称为尼特。

All the lesions were quite large in volume,and the largest one was 6.0cm×5.2cm×6.2cm.All the lesions locate close to the convexity of brain,and the meninges around the lesions were not incrassation and enhancement.All the supratentorial lesions were regular in shape,well demarked,and often with slight peritumoral edema in 6 cases and no edema in 2 cases.The lesions demonstrated long T1 and long T2 signal intensity,mixed signal intensity on T1WI and T2WI.Small cystic degeneration could be seen in 2 cases.

本组病例肿块均较大，均位于脑实质内，占位效应明显，最大者为6.0cm×5.2cm×6.2cm，最小者为4.5cm×3.8cm×3.8cm；位置表浅，邻近脑膜，但周围脑膜无明显增厚；肿块形态：类圆形6例，不规则形2例；肿块边缘清楚；均匀实性肿块6例，肿块内可见囊性改变2例；肿块周围可见轻度水肿6例，2例肿块周围无水肿；肿块信号相对均匀，T1WI呈稍低或低信号，T2WI呈稍高或高信号，其中2例肿块内可见脑脊液样T1、T2信号影；肿块呈均匀强化6例，环状强化2例。

Results The 8 cases of supratentorial lesions included temporal lobe lesion in 4 cases,occipital lobe,fronto-occipital lobe,fronto-parietal lobe,parietal lobe,frontal lobe in each 1 case.All the lesions were quite large in volume,and the largest one was 6.0cm×5.2cm×6.2cm.All the lesions locate close to the convexity of brain,and the meninges around the lesions were not incrassation and enhancement.All the supratentorial lesions were regular in shape,well demarked,and often with slight peritumoral edema in 6 cases and no edema in 2 cases.The lesions demonstrated long T1 and long T2 signal intensity,mixed signal intensity on T1WI and T2WI.Small cystic degeneration could be seen in 2 cases.

本组病例肿块均较大，均位于脑实质内，占位效应明显，最大者为6.0cm×5.2cm×6.2cm，最小者为4.5cm×3.8cm×3.8cm；位置表浅，邻近脑膜，但周围脑膜无明显增厚；肿块形态：类圆形6例，不规则形2例；肿块边缘清楚；均匀实性肿块6例，肿块内可见囊性改变2例；肿块周围可见轻度水肿6例，2例肿块周围无水肿；肿块信号相对均匀，T1WI呈稍低或低信号，T2WI呈稍高或高信号，其中2例肿块内可见脑脊液样T1、T2信号影；肿块呈均匀强化6例，环状强化2例。

Results The 8 cases of supratentorial lesions included temporal lobe lesion in 4 cases,occipital lobe,fronto-occipital lobe,fronto-parietal lobe,parietal lobe,frontal lobe in each 1 case.All the lesions were quite large in volume,and the largest one was 6.0cm×5.2cm×6.2cm.All the lesions locate close to the convexity of brain,and the meninges around the lesions were not incrassation and enhancement.All the supratentorial lesions were regular in shape,well demarked,and often with slight peritumoral edema in 6 cases and no edema in 2 cases.The lesions demonstrated long T1 and long T2 signal intensity,mixed signal intensity on T1WI and T2WI.Small cystic degeneration could be seen in 2 cases.

本组病例肿块均较，均位于脑实质内，占位效应明显，最大者 6.0cm×5.2cm×6.2cm，最小者为4.5cm×3.8cm×3.8cm；位置表浅，邻近脑膜，但周围脑膜无明显增厚；肿块形态：类圆形6例，不规则形2例；肿块边缘清楚；均匀实性肿块6例，肿块内可见囊性改变2例；肿块周围可见轻度水肿6例，2例肿块周围无水肿；肿块信号相对均匀，T1WI呈稍低或低信号，T2WI呈稍高或高信号，其中2例肿块内可见脑脊液样T1、T2信号影；肿块呈均匀强化6例，环状强化2例。

Yet, Edith says, there was always money in the bank.

但是Edith说，她的银行户口里面总是有钱。

We have created a series of files that resolve this problem--one for each day of the 40 days of purpose.

我们制作一系列的档案去解决这问题---一个为标竿40天中的每一天。