外壁

The results proposed that the abnormalities of microsporocytic cytoplasm or pollen exine, rather than the tapetal development caused the pollen abortion of Peiai 64S.

据此认为，培矮64S的花粉败育可能是由小孢子母细胞或花粉外壁的异常发育造成的，而不是由绒毡层发育引起的。

At last the paper realized the advantages and disadvantages of passive solar building and adnvanced some suggestions in future research. From another point, the paper logged the process of the building of the experimental equipment and the mounting of the measurement equipments that accumulated some operating experimence.Carrying experiments, calculating and analyzing the experimental data for more than 2 years, the paper gained some constructive conclusions. In winter the indoor air temperature and RH are lower than comfort criteria, but people feels very comfortable in the passive solar house. The thermo-circulation formed by Trombe wall play an important role in improving indoor air temperature and RH. Based on the analogy analysis theory, the natural convection heat transfer in the air gap can be treated as superposition of two natural convection heat transfer processes occurring over isolated isothermal vertical flat plate, in this case namely the massive wall and glazing. Two empirical formulas for Q and Nu are obtained. The investigation shows that the optimal time to open the damper should comply with the period that the thermo-circulation happens which can be controlled by thermal response characteristics of Trombe wall surface temperature and air temperature in the air gap.

经过两年多的实测和计算，根据传热学、流体力学、统计学等学科的基础理论，对大量数据进行整理归类、分析讨论，主要得到如下结论：(1)冬季，含有特朗贝墙体的被动式太阳房室内热湿环境较舒适性标准偏低，但人体感觉比较舒适，特朗贝墙体形成的热循环通风在调节室内温度和相对湿度方面起到很大的作用；(2)特朗贝墙体空气间层自然对流可以看作是两个等温独立大平板的自然对流换热过程的叠加，通过与大平板自然对流理论类比获得了计算热循环过程中对流换热量的经验公式；(3)特朗贝墙体通风口的启闭可以根据玻璃幕墙内壁面温度、蓄热墙体外壁面温度和空气间层进出口空气温度之间的关系来进行控制，从而有效地阻挡冬季冷循环的发生；(4)夏季，如没有有效的通风降温措施，被动式太阳房内会产生明显的过热。

Using calcein as an indicator, the effects of electroporation on de exined pollen, ungerminated and germinated intact pollen in Nicotiana tabacum were compared.

利用膜不通透的荧光染料钙黄素作为指示剂，比较了烟草脱外壁花粉与完整的未萌发花粉和萌发花粉电激导入的效果。

The exine structure is striate-foveolate, and the pollen exine can be divided into tectume, columellae and foot-layer.

Dichotomanthes Kurz具典型Rosaceae花粉的三孔沟结构，外壁具条纹-穴状纹饰。

Ventilation might be beneficial for suppressing the dewing.

降低外壁黑度有利于防止舱内结露。

Author has described the corrosive mechanism of urea prilling tower;analyzed the property index and usage effect for anti-corrosive materials of adopted coating, FRP and glass flake mortar etc.

阐述了尿素造粒塔的腐蚀机理；针对造粒塔外壁、内壁和塔底的腐蚀形态，分析了采用涂料、玻璃钢和玻璃鳞片胶泥等防腐蚀材料的性能指标和使用效果；通过对防腐材料构造和防护特点的对比，提出了防腐蚀衬里选材的相关建议。

When grass about 3.6 kg with moisture content of 8.1% and wheat straw of the similar weight with moisture content of 10.2% smoldered in the furnace, temperature at the center of material kept above 400℃ for more than 600 minutes and 400 minutes respectively.

约3.6kg含水率为8.1％的高羊茅草或含水率为10.2％的麦秸在炉内阴燃时，炉腔中心点温度维持400℃以上分别达600min和400min，炉内物料上部气体产物温度最高不超过120℃，炉体外壁面温度维持50℃以上可达12h。

The pollen morphology of 5 species of Corydalis from northeast China was observed and compared by SEM.

文摘：用扫描电镜对东北延胡索极其近缘植物的花粉形态进行了观察，结果发现花粉粒在形状、大小、外壁纹饰、沟的长短及宽度等方面均有区别，从中获得了东北延胡索及其近缘植物分类方面的孢粉学依据。

Based on weld finite element analysis software SYSWeld, the outer shells on air diffuser of an aeroengine augmentor was modelled.

基于焊接有限元分析软件SYSWeld，建立了某型号航空发动机加力燃烧室扩散器外壁的有限元模型，采用双椭球热源模型，模拟了其环缝电弧焊接的过程，得到了焊接温度场、应力场及焊后变形分布的结果并对其进行了定性分析。

However, differences in the development of each of these units have produced a variation in the structure of the exine.

然而由于每一部分发育状况的不同，而导致每一种植物花粉的外壁结构具有各自的鉴别特征。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。