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It proves that tree top leaves suffer from water stress and hydraulic limitation becomes greater with tree height.Water stress influence tree height growth in several aspects:firstly is the influence of exterior water condition,and community average tree height is positive with exterior water condition.Secondly, hydraulic limitation influences individual tree structure and function.Xeromorphic structure,Lower water potential and turgor pressure limit cell division and expansion,which restrict gas exchange and carbon assimilation capability.However,respiration consumption increases with the spread of tree crown.Shortage of nutrient limits carbon investigation on new leave growth and may ultimately limit tree growth.Thus,the main limitation of tree height is water.

水分对树高生长的限制首先是外在的水分状况，群落的总体高度随外界水分状况的变差而变矮；再就是水力限制对单株树木的结构和功能的影响，水势降低、膨压减小使细胞的分裂和扩展受限，旱生型结构加剧水力对气体交换能力的限制、使光合碳同化能力受到限制、而呼吸消耗却随着树木个体的增大而增大，制造营养物质不足、使得营养亏缺、造成投入新枝叶的营养受限，最终限制了树高继续增长。

As applications of the method, the linear wave making problems of Wigley hull and Series 60 hull are solved, with less collocation-points than that in traditional panel method, and the Kelvin wave-patterns calculated are in accord with the test data. Reasonable Kelvin wave-pattern and wave resistance of a high-speed round-bulge ship with transom stern are obtained by enforcing a condition, resembling Kutta-type condition, of smooth flow detachment at the transom stern. In addition to that, the linear solution of a catamaran is also presented.

本文运用该方法求解了Wigley船型与系列60船型的线性兴波问题，以较少的配置点计算出了与实验结果相近的Kelvin波系及合理的波形阻力；以在方尾部强加类似于库塔条件的光滑分离边界条件求解了高速圆舭型方尾船的线性兴波问题，得到了合理的三维波型及波形阻力；另外还求解了双体船的线性兴波问题。

To investigate the effect of launch parameters on trajectory of electric power torpedo launched by battery activated outside tube, a model of torpedo movement in vertical plane is established, and initial condition is set according to activation condition outside tube. Simulation of the trajectory of electric power torpedo is conducted with Simulink.

为探讨电动力鱼雷动力电池采用管外激活发射时，发射参数对弹道的影响，建立了鱼雷纵平面运动模型，并针对管外激活情形对初始条件进行设定，利用Simulink编程，对横舵管制舵角、动力电池激活时间和鱼雷出管速度取不同值时的弹道进行仿真。

On condition that the nonlinear uncertain functions are gain bounded, a sufficient condition, which is dependent on the maximum value of the time derivative of time-varying delay, is presented for the existence of the controller.

在非线性不确定性满足增益有界条件下，得到了该类时变时滞系统依赖於时变延迟导数的最大值的满足鲁棒性能的一个充分条件。

Objective: To observe the change of regional cerebral blood flow in different region of interest under quiet condition and performing hand motor condition with single photon emission tomography, elucidate the mechanism of the brain regions activated by simple hand motor (repetitive and sequential finger- to- thumb opposition movements in turn) and detect the role of active cortical areas by analyzing the difference of rCBF in different age groups.

目的：本研究的目的是运用单光子发射断层扫描仪对比观察正常人在安静状态下和执行手指简单运动状态下脑内不同感兴趣区（region of interest， ROI）的血流量变化情况，进而阐明简单运动模式下脑内运动相关功能区的激发情况，并通过分析不同年龄组运动区激发时血流量变化的差异来探讨运动功能区的作用，对于临床中枢神经系统瘫痪后的运动功能重建和康复训练具有指导意义。

The analysis of 3D noise indicates that the measurement is effective. Two MRC models of ICCD imaging system has been established based on system performance of energy and modulation transfer whose target is three-bar. One MRC model is under the condition of standard A lamp, and the other is under the condition of night photo-spectrum. Because the MRC models integrate sensitivity, noise, target spatial frequency, MTF and the performance of human eye all together, the MRC models can evaluate limit performance of photoelectric imaging system more roundly.

在系统能量传递特性和调制传递特性的基础上，以三条带图案为研究对象，从信号转换的角度出发，围绕每景象立体弧度角中ICCD的电子通量，建立了基于量子噪声和CCD噪声特性的微光ICCD成像系统MRC模型，MRC模型综合了系统灵敏度和噪声、目标空间频率、系统调制传递特性以及人眼视觉特性等因素，能更全面地反映光电成像系统的极限性能。

The series resonance type fault current limiter has the advantage of simple operating principle and topological structure etc. It may be designed with serial compensation following the condition of the electrical network. However, from the simulation, we draw the conclucion: in the process of restraining fault current after a fault occurrence in electrical network, capacitor and parallel inverter switch will stand for poor working condition.

串联谐振式限流器具有工作原理、拓扑结构简单等优点，并且可以根据需要设计成带串补型，但通过仿真分析得出：其在电网发生短路故障进入短路限流工况过程中，其电容器及并联转换开关将工作在相当恶劣的条件下。

The experimental results show that the estimated strength of cylindrical specimens and core specimens taken from plate-like specimens under the condition of saturated surface-dry were good and the difference between the estimated strength and the measured strength is within 10%. For the plate-like specimens used in this study, measured the surface P-wave and internal P-wave, and investigate the difference between surface P-wave and internal P-wave velocities. Firstly, the internal P-wave velocity was recovered to the saturated surface-dry condition.

实验结果显示，350 kgf/cm2自充填混凝土及早强混凝土之圆柱试体及版试体所进行波速－强度关系曲线验证结果良好；而将圆柱试体及版试体套入粗骨材含量波速－强度关系式所得结果，其圆柱试体28天超音波强度预估差异约10%，显示试体28天处於面乾内饱和状态，以粗骨材含量配合波速量测来预估强度之结果良好。

The overpressure transients of the most penalizing category 2 condition and category 3 condition are simulated by the thermal-hydraulic code-CATIA 2, and the reactor coolant system overpressure protection under the stretch-out operation for LING AO NNP is validated.

本文阐述岭澳核电站延伸运行工况下反应堆冷却剂系统超压保护分析的原理和方法，利用热工水力程序CATIA2对最为严重的二类工况和三类工况超压瞬变做了分析和计算，计算表明岭澳核电站延伸运行期间冷却剂系统超压保护是有效的。

The thermodynamics about the buckwheat microporous starch absorbing the methylene blue follows the monolayer absorption rule of the Langmuir equation. The alkalinity condition monolayer saturated adsorption is 2.9 times higher than acidic condition. When pH value rose from 4.8 to 10.8, the negative value of absorption heats increased, absorption was spontaneous exothermic process, and that was easier to carry on at pH10.8 due to the slight adsorption electrostatic repulsion.

荞麦微孔淀粉对亚甲基蓝的吸附热力学遵循Langmuir直线吸附方程的单分子层吸附规律，碱性条件的单分子层饱和吸附量比酸性条件高2.9倍；pH值从4.8增大至10.8，吸附热负值增大，吸附为放热的自发过程，且在pH10.8时吸附所受到的静电斥力小，吸附更容易进行。

I think people in this lifetime in a rebirth.

我觉得人在这一生里其实也在轮回。

He had to tie her hands together.

他不得不把她的双手绑在一起。