气孔的

In order to meet BF operation with high pulverized coal injection ratio, the solution loss behavior of coke in BF has been investigated. Being directed at performance varying of tuyere coke, various influential factors and their effects have been analyzed, which include size composition, slag and iron coherent condition, pore structure and optical texture, the quantity varying of unburnt pulverized coal particles below 0.5mm of tuyere coke.

本文以风口焦的性能变化研究为立足点，从风口焦的粒级组成、粘附渣铁状况、风口焦气孔结构和光学组织、风口焦中＜0.5mm粒级中未燃烧煤粉的量的变化入手，对影响风口焦性能的因素进行了分析。

The new progresses:(1)the anatomic studies on the leaves, stems and cones of 25 species Late Mesozoic conifers, particularly those very similar to the living genera, such as Athrotaxites, Torreya, Taxus, Cephalotaxopsis, Cunninghamia and the cheirolepidaceous conifers, such as Brachyphyllum and Psudofrenelopsis;(2) the distribution and evolution of the Late Mesozoic conifers, the relationship between the concentration of CO2 of the atmosphere and the stoma index of the gymnosperms during the Middle Jurassic and Early Cretaceous;(3) the characters, compositions and ages of the Jurassic floras of Yabula Basin, and Erlian Basin of Inner Mongolia and the Early Cretaceous floras and Jiuquan basin and Beishan Area of Gansu.

对12属25种中生代松柏类的枝叶、球果及茎干化石进行了解剖研究，特别是对与现生松柏类相似的Athrotaxites， Torreya， Taxus， Cephalotaxopsis， Cunninghamia及可能属于掌鳞杉科的Brachyphyllum， Psudofrenelopsis等的研究较为深入，发现了4个新种；总结了中国晚中生代松柏类的特点及分布，讨论了重点属的起源和演化问题；研究了中侏罗世、早白垩世及现代裸子植物包括松柏类气孔与大气CO2浓度关系，发现气

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。

Tight alloying layer with undulation and without visual pocket and inclusion has been obtained by experiment.The alloying layer is metallurgically combined with the matrix.

试验结果获得了致密、无肉眼可见气孔、夹杂、熔覆表面有一定起伏的合金层，合金层与基体间完全冶金结合；熔覆合金层由单相Fe3 Al构成，覆层组织为粗大的柱状晶团，柱状晶团内包含大量极细小的板条状Fe3 Al晶粒，一些相邻的板条晶之间具有基本相同的晶体学取向。

The microstructure and thermal physical properties of the surface reactional layer determine the range of strength improvement.Stress relaxation was benifical for strength,but the oxidation-induced bubbles and crack weaken the specimens.

热处理引起的应力松弛也有利于材料强度的提高，但氧化过程中产生的表面气孔及冷却过程中产生的表面微裂纹会引起材料强度的下降。

Mol-1 of ozone are compared to those from the control run, indicating that from the heading to mature stage contents of chlorophylls a and b as well as the total increase first and then drop, but the carotenoid content and the value of value of chl a/b keep steadily rising and declinling, respectively, there is no significant decrease in the net photosynthetic rate and stomatic conductance during the early stage of heading but their drops increase gradually with prolonged smoking time.

mol-1的O3处理下，与对照相比，从抽穗期到成熟期冬小麦叶绿素a、叶绿素b和总叶绿素含量均呈先上升后降低的变化趋势，而类胡萝卜素的含量和Chla/b的比值则分别持续升高和下降，净光合速率和气孔导度在抽穗初期无明显下降，但是随着熏蒸时间的增加下降幅逐步变大。

The results showed that the light saturation point of potato leaf was about 1400 μmoll(m^2s) and its light compensation point was about 50 μmoll(m^2s), the stomatic conductance and the transpiration rate increased while the intercellular CO2 concentration reduced with the increasing of light intensity between the light compensation point and light saturation point.

试验结果表明：马铃薯叶片光合作用的光饱和点约为1400 μmol/(m^2s)，光补偿点约为50μmol/(m^2s)。在光饱和点和光补偿点之间，随著光合强度的增加，叶片的气孔导度和蒸腾速率升高，胞间CO2浓度降低；随著CO2浓度的增加，光合速率升高，其CO2的饱和点约为2000μmol/mol。

The results showed that C. chinensis net photosynthetic rate, transpiratory rate, stomatal conductance were dereased with the increase of stress and the degress of the decrease were the least ones urder light water stress concentrations of intercellular CO2 decreased with the increase of stress. Seedlings of C.

结果表明：紫荆净光合速率、蒸腾速率、气孔导度随着胁迫强度增加呈现出降低的趋势，但在轻度水分胁迫时的降低最少；紫荆的细胞间隙CO2浓度随着胁迫强度的提高呈现出升高的趋势。

Made in massive 200 pound wheels from pure, unpasteurized cow's milk, this special "Swiss" is aged for at least twelve months in sandstone caves deep below the Santenberg in the Canton of Lucerne.

切开这种奶酪，可以看到在淡黄色的奶酪上，布满了大大小小的气孔，那些孔是在奶酪的发酵过程中由碳酸形成的气泡，通过这些孔的样子就可以知道奶酪的发酵是好是坏。

The belt of this conveyor is supported by the pressure air rushed out of the holes of the air chamber into which air is blowed continuouly in a certain amount and pressure by a fan and wind adjusting mechanism. The conveyor driven by a drive mechanism conveys materials on an air cushion, thus fluid friction is in place of rolling friction between belt and support roller, reducing the friction drag.

本机是通过风机和风量调节机构连续向气室供给一定压力和流量的空气，空气通过气室盘槽上的排气孔在胶带与盘槽之间现成气垫支承，胶带在传动机构的拖动下，在气垫上运行，以流体摩擦代替托辊式胶带输送机的滚动摩擦，减少阻力，达到输送物料的目的。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。