黄变

The effect of yellowing condition on starch metabolism during curing process of tobacco leaf was studied.

探讨烘烤过程中变黄条件对烤烟淀粉代谢的影响。

The results showed that the TiN andN films are polycrystalline phase. The properties and structure of TiN films are mainly determined by the N2 mass flow rate, and as the N2 mass flow rate increases, the structure of the TiN films transforms to f.c.c. type leading to better the properties of films. The presence of negative bias voltage can optimize the grain of TiN films, lower the defect proportion and denser the films, which improves the hardness of films. The TiN films conform to the free carrier absorption mechanism and there are many of free electrons with lower N content in TiN films. With the increase of N content, the quantity of free electrons and reflectivity of films decrease, and the plasma frequence shifts to the lower energy, which leads to the regular change of colors of films from silver, yellowy, golden to yellow-red, meanwhile the lightness of films decreases. The goldenN film consists of TiN and ZrN phase, but belongs to a sigle f.c.c. structure with (111) preferred orientation. The Zr-doping dosen't change the position of the valance band, conduction band and forbidden band ofN film, but leads to the presence of new energy levels, which is the reason thatN film remains golden. The transparent hard films with good corrosion resistance and high hardness have been prepared and the further reseachs showed that the grain size of those films is by far smaller than the wave length and the width of forbidden band of those films is very broad, is the reasons that those films are transparent.

研究表明：氮化钛和N 薄膜为多晶态，氮流量决定了氮化钛薄膜的结构和性能，增加氮流量能使氮化钛薄膜的结构向面心立方结构转变，从而得到性能良好的氮化钛薄膜；施加负偏压能优化氮化钛晶粒和减少薄膜中的缺陷，使膜层变得更致密，从而提高薄膜硬度；氮化钛主要遵循自由载流子光吸收，氮含量较少时薄膜中的自由电子数目较多，随着氮含量的增加，薄膜中的自由电子数目不断减少，反射率逐渐降低，等离子体频率向低能端移动，从而使薄膜颜色出现规律变化，由金属色银白色到淡黄、金黄再到红黄，并且薄膜亮度呈下降趋势；金黄色的N 薄膜中存在TiN 和ZrN 的分离相，但其为单一的面心立方结构并具有(111)面择优取向；相对于TiN 薄膜，Zr 掺杂后，并没有使薄膜的导带、价带和禁带发生变化，只是在TiN 禁带内增加了新能级，这也正是掺杂Zr 后，薄膜仍

For the species identifying the bacterium parting for out, have been used for the BCG milk culture medium training an appraisal an experiment, the flavescence training 48 h queen bacterial colonies vicinity colour, may judge out that bacterium produces acid when growing kind; Have made the benzazole experiment, reaction result is feminine gender.

为了鉴定分离出的菌种，做了BCG牛乳培养基培养鉴定实验，培养48h后菌落周围颜色变黄，可判断出该菌种生长时产酸；还做了吲哚试验，反应结果为阴性。

This substance is bleached by the action of light and converted into a yellow and finally a white material.

这种物质被光脱色而变黄，最后成为一种白色的物质。

The accumulation of fluorogen may play a major role in the yellowing and increasing fluorescence of the lens with age.

荧光发生素在晶状体中积累，可能主要参与老化过程中晶状体变黄和荧光色素增加。

Observation under optical and transmission electron microscopes showed that the Cu-contaminated leaves were thickened, with the expansion of leaf cell and the incrassation of palisade tissues. The yellow leaves might result from the damage to chloroplasts. Cortical cell death in root system might also have a negative effect on root water absorption and transportation, causing plant water content decreased.

通过光镜和投射电镜观察，发现紫云英污染叶变厚，其原因是叶片细胞膨大和栅栏组织增厚；叶片转黄与叶绿体遭破坏有关；根系部分皮层细胞死亡可能影响根系吸水和植株水分运输，导致植株含水率降低。

The result suggests that the plant was infected with geminivirus. Stem scions from the plant were graft-inoculated to I. purpurea. Three weeks later, the indicator developed symptoms of leaf curling and interveinal chlorosis. The geminivirus can be transmitted by whitefly.

实验表明该染毒材料嫁接到指示植物牵牛上三周后牵牛植株产生卷叶和叶片变黄的症状；病毒可由白粉虱传播，初步认定该病毒是菜豆金色花叶病毒属的甘薯卷叶病毒(sweet potato leaf curl virus，SPLCV)，将其命名为SPLCV-CN。

At the foot of the vast jokul, a Jeep of 2020 run ver fast on the boundless and yellow great prairie, the eyeshot began to become very widen, I thought of Xu Wei's song: tasting fever, tasting loneliness, tasting gladness, love, hate, and part… In my heart, there did were some senses.

在茫茫的雪山脚下，2020狂飙于无边的泛黄的大草原上，视野开始变得开阔无比，耳边响起许巍的完美生活：体会着狂野、体会孤独、体会着欢乐，爱恨离别。。。。心里自又是一番感慨。

Mr Wong said Liwan big change, prices sure to rise.

黄先生说荔湾区变大后，楼价肯定要升。

True runners grasp every single second of life by welcoming the morning when the sun comes up the shore and enjoying the e loquence of silence as time can never turn back.

真正的速度是看不见的，就像风起云涌，日落月升，就像你不知道树叶什么时候变黄，婴儿什么时候长出第一颗牙来。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。