气孔的

Strength of SPBT was numerically explained on the base of Perdersen discharge model of ellipsoid void, and the conclusion was got that the discharge strength of void was an inverse measure of the cosine of oriented angle of void.

本文首次利用Perdersen的棉球气孔放电模型，定量解释了SPBT瓷体局部放电起始场强的大小，并得到瓷体中气孔发生放电的外施场强与此气孔取向角余弦成反比的结论。

The photosynthetic rate decreasing of un-pretreated was not caused by plant spiracle.Thephotosynthetic rate decreasing of the pretreated plant was caused by plant spiracle in the first andsecond low temperature stress day,The photosynthetic rate decreasing of the pretreated plant wascaused by other factors in the third and fourth day.

在胁迫过程对照植株光合速率的下降是由非气孔因素引起；锻炼植株光合速率的下降在胁迫的前两天是由气孔因素引起，在胁迫的第三和第四天是由非气孔因素引起。

The six species of Coniogramme are different in the size of cell of leaf epidermis, the size of stomatal, Stomatao density and Stomatal index.

但6种凤丫蕨属植物在表皮细胞大小、气孔大小、气孔密度和气孔指数上存在一定的差异。

The stomatal density of the Fagus Pashannica seedlings in two habitats has been detected.The results show that: the stomatal density of Fagus Pashannica seedlings in different habitats is significantly different.Soil humidity and light intensity is the main factor causing stomatal density defference,especially the role of light intensity.

通过对两个不同生境巴山水青冈幼苗叶片气孔密度的观测，结果表明：两个生境的巴山水青冈幼苗叶片气孔密度差异显著，光照强度和土壤湿度是引起气孔密度差异的主要因素，其中光照强度作用尤为显著。

The chloroplast of the mesophyllous cells in the white part of the green-white leaf of PM3 were dissolving or had dissolved.

观察其叶片表面结构和叶肉细胞超微结构，结果表明：3个突变株系的叶片气孔密度增大，气孔面积减少，单位视野中气孔所占面积比则变化不大；叶肉细胞中叶绿体体积增大，形状变圆并移向细胞中央；PM3株系白绿相间叶片的白色部分，其叶肉细胞中叶绿体多数正在或已经消解，结构不完整。

According to transpiration rate, extracells CO2 concentration, stomatic conductance of four alfalfa varieties under water-stress, it was concluded that reduction of photosynthetic rate was primarily resulted from stomatal factors under light and medium water stress and nonstomatal factors under severe water-stress in the experiment during branching.

通过分析水分胁迫紫花苜蓿分枝期叶片气孔导度、蒸腾速率和胞间CO2浓度的变化，认为试验中轻度和中度水分胁迫下光合速率下降的主要因素是气孔因素，重度水分胁迫下光合速率下降的主要因素是非气孔因素。

In summary, we identified firstly that existence and distribution of JA and NOS in guard cell; presumed that the direct transport of JA from unwounded tissue to wounded site could account for the increase of JA after leaf wounding, and involved stomatal closure, and proposed a possible pathway of JA involved in regulating stomatal movemnts as follows: The production of NO stimulated by JA triggers the increases of cytosolic Ca〓 concentration, subsequently activate other downstream reactions and eventually induces stomatal closure.

本研究中我们首次确认了气孔保卫细胞中JA和NOS的存在和分布；伤引起的JA运输和分配的变化可能参与对气孔运动的调控，并提出JA调控气孔运动信号转导的一条可能途径：JA引起NO含量的增加，经第二信使Ca〓的作用及其下游事件，最终诱导气孔关闭。

But there existed significant difference in the form of leaf base , leaf length, leaf width and micro-morphology characteristics of the leaf epidermis（the cell number of the adaxial epidermis and abaxial epidermis, the stomal length,the stomal width,the stomal density）.

结果不同叶型的冬凌草其表皮细胞的形状、气孔类型均相同，但其叶基形状、叶长、叶宽、叶表皮微形态特征（上表皮细胞和下表皮细胞的数目、气孔长度、宽度及气孔密度等）存在明显的差异。

But there existed significant difference in the form of leaf base , leaf length, leaf width and micro-morphology characteristics of the leaf epidermis（the cell number of the adaxial epidermis and abaxial epidermis, the stomal length,the stomal width,the stomal density）.ConclusionIt exhibited mutation in morphological characteristics of the leaf and micro-morphology characteristics of the leaf epidermis in a long-term cultivation process.

结果不同叶型的冬凌草其表皮细胞的形状、气孔类型均相同，但其叶基形状、叶长、叶宽、叶表皮微形态特征（上表皮细胞和下表皮细胞的数目、气孔长度、宽度及气孔密度等）存在明显的差异。

Together with the observed low stomatal conductance, both stomatal and non-stomatal factors contribute to the midday depression in BOL.

同时由于胡杨圆形叶在13∶00h时的低的气孔导度，因而气孔因素和非气孔因素决定了胡杨圆形叶的光合午休。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。