速率

On the basis of two criteria of stomatal limitation of photosynthesis suggested by Farquhar and Sharkey,the re-dominant limiting factor of photosynthesis is stomatal conductance of stomatal limitation in the forenoon,but the midday depression of photosynthesis at noon and the decrease of photosynthesis in the afternoon are the results of low carboxylation efficiency of the mesophyll leaf.

根据Farquhar和Sharkey的观点，造成净光合速率下降的原因既有气孔限制又有非气孔限制因素，上午净光合速率下降的主要是由气孔限制因素造成的，午间和下午光合速率的降低则主要归因于叶肉细胞羧化效率的降低。

By means of analyzing the solubility and solubility rate of gas in water, and making application of double-film theory and Fick's law, the solubility rate of nitrogen in water is theoretically calculated in ga.

通过对气体在水中溶解度和溶解速率的分析，应用气体溶解速率的"双膜理论"和气体扩散的"菲克定律"，从理论上计算出气密性试验中的氮气在水中的溶解速率。

Kinetics of methanol dehydration to dimethyl ether on modified kaolin catalyst was studied in an integral reactor under normal pressure. It is deduced that the surface reaction of methanol molecule adsorbed on the active site of catalyst with methanol molecule in gas phase is the rate determining step. The hyperbolic type kinetic equation r=ksbMpM2/(1+bMpM+bpE) is obtained according to the theory of langmuir even adsorption and using the R-E mechanism.

采用积分反应器，考察了常压下在改性高岭土催化剂上甲醇脱水生成二甲醚的反应动力学，根据Langmuir均匀吸附理论，采用R-E机理，推断吸附的甲醇分子与气相主体中的甲醇分子发生的表面反应为速率控制步骤，得到双曲线型动力学方程为： r= ksbMpM2 /(1+bMpM+bpE)（r为反应速率， ks为反应速率常数， bM为甲醇的吸附平衡常数， b为二甲醚和水的吸附平衡常数之和， pM、 pE分别为甲醇、二甲醚的分压）。

The results showed that the photosynthetic rate of B.stamineus decreased with the increasing of the drought gradient,but the decrease amplitude was less.The photosynthetic rate of B.inermis decreased indistinctively with the increasing of the drought gradient in the prometaphase,decreased distinctively in the later stage.

结果表明：美国无芒雀麦的光合速率基本上随着干旱梯度的增加而逐渐下降，在不同胁迫天数间也逐渐下降，但下降幅度较小；本地无芒雀麦各干旱处理光合速率在胁迫前中期随胁迫梯度的增加下降不明显，到胁迫后期才表现出较为明显的下降趋势，但在各胁迫天数间差别不大，仅在胁迫第20 d各处理光合速率较之前有较为明显的降低。

The interatomic potential for Al-Mg alloys is different from the others used in the paper. Although it is the EAM type formalism of many-body potential, the functions of this potential are not analytical forms. The functions are described by a numerical set of points, whose values are the parameters to be optimized.

非晶态Ni〓Al加热至晶态结构需要比结晶更慢的加热速率，当加热速率较大时，得到了bcc型结构占有较大比例的结构，这可能是Ni〓Al的一种亚稳结构；当加热速率较小时，可以获得部分有序L1〓结构晶体，不过晶体中仍有少量hcp型结构存在。

Results showed that settling rate is in inverse ratio to the value of SV and MLSS. Sludge age, oxygen consuming rate, extracellular polymer and removal efficiency of COD take changes with variety of settling rate.

结果表明：作为选择压的沉降速率与反应器中SV值和MLSS成反比关系；在沉降速率变化过程中，污泥龄、耗氧速率、胞外多聚物和COD去除率均产生变化。

The maxima of low-temperature internal friction peaks plot a symmetrical peak-like curve at logarithmic frequency spectrum and the peak-like curve shifts toward high frequencies with the increase of heating rate, indicating that phase transition relaxation time decreases; the maxima of high-temperature internal friction peaks exhibit a linear relation to the reciprocal frequencies, and as the heating rate increases its slope rises, which implies that the heating rate drives the normal movement of phase interface further in low-frequency measurements.

低温内耗峰峰值与对数频率呈现峰形函数关系，随升温速率的增加，频率峰向高频方向移动，相变弛豫时间减小；高温内耗峰峰值与倒数频率成直线关系，随升温速率的增加，直线斜率变大，表明低频测量时升温速率对相界面法向运动的驱动作用更强。

Results showed that the diurnal changes in Pn of the species in different periods were similar and could be expressed as two-hump curves, reflecting a significant middy depression. The decrease in Pn during midday was mainly resulted from non-stomatal limitation in July, but stomatal limitation occurred in August and September. High temperature and low relative humidity were critical factors constraining Pn in July.

结果表明，不同时期防风净光合速率日变化均呈双峰型曲线，具有明显的光合"午休"现象。7月份防风光合速率中午降低主要由非气孔限制引起，8月份、9月份防风光合速率中午降低则主要由气孔限制引起，7月份高温低湿是限制防风Pn的主要环境因子。

Result: While gardenia extract was administered solely,the absorptive rate constant of geniposide was （0.055±0.006） h-1; But while the extract was co-administered with radix curcumae,moschus and borneol, the K were （0.060±0.001）,（0.066±0.008）,（0.072±0.010） h-1,respectively.

结果：栀子提取物质量浓度为0.8 g·L-1（含栀子苷0.311 g·L-1）时栀子苷吸收速率常数为（0.055±0.006） h-1；栀子提取物分别与艾片、郁金、麝香配伍时吸收速率常数分别为（0.072±0.010），（0.060±0.001），（0.066±0.008） h-1，合方后吸收速率常数为（0.076±0.011） h-1。

By using a fracture simulation unit,the regularity that temperature,flow rate and fracture width influence on HCl/dolomite reaction rate is investigated.The sequence of temperature,flow rate,acid concentration and fracture width influence to the acidic rock reaction rate is also studied in a four factors and four levels orthonormal test,and the sequence that acid concentration＞flow rate＞temperature＞fracture width is found.At the last,the possible HCl/dolomite reaction mechanism model which can explain the influence factors is derived.

文中利用人工模拟裂缝装置，研究了温度、注酸排量、裂缝宽度等因素对盐酸/白云岩反应速率的影响规律；并采用四因素四水平的正交试验，综合考察了温度、排量、酸浓度、缝宽四种因素对酸岩反应速率的影响的主次顺序，发现对酸岩反应速率影响力的大小次序为：酸浓度＞排量＞温度＞缝宽；最后，提出了盐酸/白云岩反应可能的机理模式，并根据这一模式对诸因素的影响进行了合理的解释。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了