有气孔的

As the changes of environment, the changes on the physiology structure can occur on different blades .The density of stem epidermis lenticel which lives on sunny slope in increasing, it is good for evaporating and exchanging gas.

从叶的形态解剖可知薄皮栓皮栎与厚皮栓皮栎，叶在在栅栏组织海绵组织的厚度，栅海比；维管束类型，机械组织发达程度；上下表皮细胞形态，垂周壁类型；气孔大小，上下表皮分布密度等方面均有明显差异。

The variation of stomata numbers,epidermis thickness and stomata chamber were investigated among the tested provenances;the provenances from Miyun of Beijing and Fugu of Shaanxi Province were more xerophilous.

种源间在鳞叶下表面气孔密度、表皮厚度和孔下室深度等方面有显著差异，属北方种源的北京密云和陕西府谷的鳞叶旱性结构特点更为突出。

Mm. 7.5.3 Requirements for quality of weld joint's surface: a No crack, not fusional, bubble, slag, splash; b Surface of seam of pipeline with design temperature lower than -29℃, stainless steel pipeline and alloy steel pipeline with trend of harden quenching shall be free from undercut.

The surface shall be smooth 7.5.3 焊接接头表面的质量应符合下列要求： 28 SH 3501-2002 a 不得有裂纹，未熔合，气孔，夹渣，飞溅存在； b设计温度低于-29℃的管道，不锈钢和淬硬倾向较大的合金钢管道焊缝表面，不得有咬边现象；其他材质管道焊缝咬边深度不应大于 0.5mm，连续咬边长度不应大于 100mm，且焊缝两侧咬边总长不大于该焊缝全长的 10%； c 焊缝表面不得低于管道表面，焊缝余高Δh 应符合下列要求： 1 100%射线检测焊接接头，其Δh≤1+0.2b1，且不大于 2mm； 2 其余的焊接接头，Δh≤1+0.2b1，且不大于 3mm。

Results Cuticular papillates,glandular hairs,peltate scales,and non-glandular hairs presented on the leaf epidermis of C.paliurus.Anomocytic stomata were confined to the lower epidermis.Large cluster crystals existed in the uppermost layer of palisade cells.Midrib included one closed vascular system and one additional vascular strand.Secondary veins are semicraspedodromous and form marginal loops,tertiary veins are percurrent,quaternary veins form orthogonal or polygonal areoles filled up by branched and freely ended veinlets.

结果青钱柳叶表皮有许多小乳突，腺毛，盾状鳞片和非腺毛表皮毛；气孔器不规则型，仅分布于下表面；靠近表皮的叶肉组织中有规律地分布含簇晶的细胞；主脉中维管组织环状，封闭，具有一个副维管束；二级脉在叶缘内分支，相互连接形成脉环，三级脉及顶型，脉间区内充满分支的自由结束的小细脉。

At the same time, vegetation growth situation and biological characteristic had significant effects on the evapotranspiration of Phragmites communis, especially, leaf area index, leaf transpiration rate and leaf conductance.

同时，植被生长状况和生理生态特征对蒸发散也有显著影响，其中叶面积指数与气孔导度是芦苇群落蒸发散的主导影响因子。

A very variable species: specimens occur with spinescent or obtuse leaf apices and with or without white stomatal bands on the adaxial leaf surface.

一非常易变的种：标本发生具具刺或钝叶尖并且有或没有白色气孔带在叶正面上。

Blue whale :a very large whale bone whale having a bluish-gray back, yellow underparts, and several ventral throat grooves.

蓝鲸：一种巨大的须鲸，背呈蓝灰色，下部呈黄色，有几个换气孔。

The Eastgate Centre, a shopping centre and office block in Harare, Zimbabwe, has a mechanical cooling system made up of vents and flues that help hot air out of the structure.

Eastgate中心、一个购物中心和办公大楼在哈拉雷，津巴布韦，有一个机械冷却系统帮助热空气在结构外面的由出气孔和通气管做成。

There are more than 10,000 geothermal features in the park, which include geysers, hot springs, mud pots and fumaroles.

这里有不下1万种的地热特征，如间歇泉，温泉，泥井和喷气孔

Tank wagons; vent holes and drain plugs on pressurized gas tank wagons with bottom discharge

槽车。排气孔和闭锁螺栓。有下部卸空装置的压缩气体槽车

I will endeavour to find you some assistance.

我尽力帮你找人帮忙。

At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.

起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像，后来回台湾，甚至去年在北京，居然也四处看见她的海报，才惊讶她的魅力之大。