气孔

The control of pores is an important way to improve the performances of CBN abrasive tools.

根据需要控制气孔状态是提高陶瓷CBN磨具使用性能的一个重要途径。

Meanwhile, roots played an important role in the regulation of stomatal behavior by delivering increased amount of abscisic acid to shoots at suboptimal root temperatures.

在不适合生长的根际温度下，植物的根系能够通过增加向地上部运输ABA的量来调节叶片的气孔导度。

A novel composite model is put forward for humidity-sensitive material based on Maxwell-Garnett and effective medium theory. The analytical expression of the relation between effective refractive index and relative humidity is shown with different absorption factors and porosities. The larger the absorption factor is, the higher the refractive index is.

在综合分析了Maxwell-Garnett理论和有效介质理论的基础上，针对半导体湿敏陶瓷材料提出了一种新颖的复合模型，给出了以吸附参数和陶瓷材料气孔率为变量的薄膜折射率随湿度变化的理论关系。

The cones are globose to ovoid, 1.5-2.5 cm in diameter with 16-28 scales, arranged in opposite pairs in four rows, each pair at right angles to the adjacent pair; they mature in about 8-9 months after pollination.

叶交互对生，在绿色脱落的侧生小枝上排成羽状二列，线形，柔软，几无柄，通常长1.3一2厘米，宽1.5一2毫米，上面中脉凹下，下面沿中脉两侧有4－8条气孔线，雌雄同株。

When the pollen grains reach the nucellus, they germinate immediately and produce short tubes. The bisexual gametes of yew tree fuse before mitosis, has the feature of single fertilization of gymnosperms.

表皮细胞表面观为方形或长方形，气孔类型单唇型，不同种类红豆杉的表皮细胞表面观和气孔形状也有所不同。

The results indicated that the photosynthesis of winter wheat leaf increased with different nitrogen levels, but with obvious photosynthesis down-regulation at noon affected by both stomatal limitations.

在各种氮肥水平下，冬小麦叶片的光合作用均存在&午休&现象，而&午休&现象的产生是&气孔因素&与&非气孔因素&共同作用的结果。

Here are the results: there are no clear difference in the length and width of leaf epidermis stomatal apparatus, stoma density and vascular bundle area in 1st internode below the ear between cold and warm type wheat. The vascular bundle area in 2nd internode below the ear of cold type wheat is obvious smaller than warm type wheat's. There are clear difference in the vascular bundle number in unit transverse area of 1st internode and 2nd internode below the ear and the rate of the total area of vascular bundle and the transverse area of wheat stem between cold and warm type wheat.

研究表明，冷、暖型小麦叶表皮气孔器的长度和宽度、气孔密度、穗下节间中维管束面积均无显著差异；冷型小麦倒二节间中维管束面积明显小于暖型小麦；冷、暖型小麦穗下节间、倒二节间单位横截面积中维管束数目、维管束总面积占茎横截面积的百分率均有显著差异。

The variety disease resistance was related to the structures of the plant leaves.The disease resistant varieties were with less stomatas and thicker wax layer.

品种的抗病性与其叶片的结构有关，气孔数目多且蜡质层薄的品种抗病性较差，气孔数目少且蜡质层厚的品种抗病性较强。

The oils Meguiar's uses are also important in maintaining the original condition of the paint by filling in the naturally occurring microscopic pores and surface imperfections thus preventing detrimental substances and elements as simple as water, or worse, acid-rain, from entering into these pores and microscopic surface imperfections thus causing oxidation and chemical etching.

美克拉使用的机密油在维持漆面的原始状态也是重要的，它靠著将自然产生的细微气孔和表面缺陷填充起来以防止有害的物质或成分(如简单的：水或更糟的：酸雨)进入这些气孔或细微的表面缺陷里而造成氧化或化学蚀刻，这些油份会把漆面上原始的树脂在自然过程中被磨损掉的部分取代掉

The effect of the size of particulates and pressing pressure on porosity ratio has been studied.

对 Al2 O3颗粒预制体的气孔率测定方法进行了探讨，研究了颗粒粒度与压制压力对气孔率的影响。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！