一层一层的

Therefore, the moist potential vorticity analysis associated with the mesoscale convective system was researched in the paper, so as to reveal the moist potential characteristics of mesoscale convective system in typhoon circulation. The results showed that, during the generation stage, convective instability characterized by MPV1 was a favorable condition for forming MCS, while the vorticity which was caused by the slantwise isentropic surface and the vertical shear of the horizontal wind characterized by MPV2 was an inspiring mechanism. The specific process was that, the atmosphere exhibited the feature of strong convective instability at the low level of convection areas and the southeast areas, which included plenty of erratic energy. The slantwise ascended the stream transfer the erratic energy to northwest, where the stratification stability was small. As decreased, the cyclonic vorticity increased. On the other hand, the vorticity caused by the slantwise isentropic surface and the vertical shear of the horizontal wind inspired the release of convective instability and as a result that the MCS formed. During the development stage, the cyclonic vorticity increased quickly with the persistent decreasing of . Meanwhile, the inclination of isentropic linewas bigger than the absolute momentum line at middle level, which exhibited the feature of conditional symmetric instability , then the conditional symmetric instability was forced to release by the vorticity resulted from the slantwise isentropic surface and the vertical shear of horizontal wind, and the MCS developed.

结果表明，在对流形成阶段，MPV1即对流不稳定为MCS的形成提供背景不稳定条件，由MPV2即湿等熵面的倾斜和水平风的垂直切变而引起的涡旋发展作为强迫机制：MCS形成的区域及东南区域中低层是强对流不稳定层，蕴含丰富的不稳定能量，倾斜上升运动把对流不稳定区具有强不稳定能量的暖湿空气向西北中层的中性层结区输送，由于的减小，气旋性涡度增强，有利于形成对流，另一方面，由于湿等熵面倾斜和低空急流加强而引起的涡旋发展作为一种强迫机制激发对流不稳定能量得到释放，从而形成对流；在对流系统地发展阶段，由于低层的对流不稳定性进一步减弱，进一步减小，气旋性涡度进一步增强，有利于MCS的增强，中层等θe 线的倾斜度比绝对动量M 等值线的倾斜度大，对应有条件对称不稳定区域，满足条件对称不稳定条件，在湿等熵面倾斜和台风低空急流作用下引起的涡旋发展强迫对称不稳定能量释放，从而使得对流得以维持和加强。

When she came close and looked in she beheld indistinct forms racing up and down to the figure of the dance, the silence of their footfalls arising from their being overshoe in 'scroff'- that is to say, the powdery residuum from the storage of peat and other products, the stirring of which by their turbulent feet created the nebulosity that involved the scene.

她走到屋前往里一看，看见一群模糊的人影正按照跳舞的队形来回奔跑着，然而他们跳舞的脚步却没有声音，因为他们脚底下铺的是一层软垫--也就是说，铺了一层堆放土煤和其它产品的煤粉草渣，经过他们混乱脚步的搅动，就扬起一片烟云，笼罩了整个场地。

The bed is lowered by a fraction of a millimetre and a new layer of powder is spread and rolled.

固化了的一层会下降小于一毫米的距离，然后新的一层粉末被喷洒和滚动。

Pascal Cotte said da Vinci built the painting up in layers,the last being a special glaze whose optical properties increased the illusion of a three-dimensional face Above the glaze Da Vinci painted details such as the eyebrows.

他称达芬奇作画时一层层涂抹颜料，最外一层涂的是一种特殊的釉料，其光学效果能增加脸部的三维立体感。在这层釉料上，达芬奇描绘了眉毛等画作细节。

From 1 to 52, they are all office buildings; above 52 floor, there are the five-star Kai Yue Hotel and a six-floor mall. All the tenantries will enjoy whatever the building provides.

金茂大厦，一到五十二层为写字楼，五十二层以上为五星级的凯悦大酒店和六层购物商场，租户可以尽情享受在大厦所提供的一切。

With the re-exposure of a certain layer-such as a painting that is not visible but can in fact be extremely well conserved underneath several layers of lime - a critical question must always be addressed: what is the goal of the restoration of a monument that, as so often is the case, is composed of very different historical layers which are all part of the monument and are all evidence of its history with its various traces of age.

至於像重现某一时代的壁画层这件事—往往一幅隐藏在表面下看不出来的壁画，实际上在好几层石灰下获得极佳的维护—我们得面对一个极重要的问题，那就是：修复古迹的目的是什麼？因为古迹本身往往是由不同的历史层所组成，整个古迹就是不同历史阶段证据的总和。

The hFCECs were cultured by sticking tissues piece method that the cornea were divided into the limbus and central tissue piece and digestive method,respectively.For digestive method,the digestive juice of 5mg/ml DispaseⅡ+0.25%trypsin was chosed.D/F12 with 10%fetal bovine serum and 100 U/ml penicillin and streptomycin were used in this study,the culture condition was 37℃and 5%CO2,and culture medium changed every three days2、Passage of hFCECsAfter more than 80%confluenced,cells from corneal limbus hFCECs were digested for 5-15min with different concentrations of trypsin/EDTA at 37℃,and then passaged at a ratio of 1:2.The cells were subcultured on empty plates,mouse 3T3 fibroblast feeder layer,fetal corneal stromal cell feeder l ayer or HTK feeder layer respectively.And D/F12, mouse 3T3 fibroblast conditioned medium,fetal corneal stromal cells conditioned medium or HTK conditioned medium with 10%FBS and 100 U/ml penicillin and streptomycin were used respectively as the culture medium.And the culture medium were changed every three days as well.

方法一、人胎儿角膜上皮原代和传代培养1、原代培养严格无菌操作获取人胎儿角膜片，采用组织块贴壁法、酶消化法原代培养人胎儿角膜上皮细胞。2、传代培养角膜缘部的细胞生长融合达80%以上，不同稀释浓度的胰酶/EDTA消化液消化传代分别接种于空板、小鼠3T3成纤维细胞饲养层、胎儿角膜基质细胞饲养层及HTK饲养层，培养液分别采用D/F12、小鼠3T3成纤维细胞条件培养液、胎儿角膜基质细胞条件培养液、HTK条件培养液。

It consists of double meaning: one is the land ecosystem self-security, another is land ecosystem security to human.

它包括两层基本涵义，一层涵义是土地生态系统自身的安全；第二层涵义是土地生态系统对人类的安全。

The surfaces of the silicon spiral are coated with highly conformal copper by electroless plating to reduce the resistive loss in the conductor,with thin nickel film plated on the surface of the copper layer for final surface passivation.

采用一种硅玻璃键合-深刻蚀成型释放工艺并结合无电镀技术制作该电感，形成厚约40μm的硅螺线，在硅螺线表面镀有高保形厚铜镀层，在铜镀层表面镀有起钝化保护作用的薄镍镀层。

You can see the difference between double-deck model and only one model with textures for eyeballs.

模特的眼球我倾向制作成2层，你可以看到一层和两层的明显区别所在。

At the rear was an innovative combination transaxle with the gearbox, clutch, differential, and inboard-mounted drum brakes.

在后面是与变速箱，离合器，差的创新结合变速，和内侧安装鼓式制动器。

For more people can apprecaite and have the master work, there is reproduction painting appears in the market, the large various selection of paint,the high saturation of color plus the plentiful sfumato, to make the reproduction perfect copy and detail as original painting, so as to meet the requirment of amateurs who love art paintings,they do not need to pay high price to get classical paintings.

颜料色域广，色彩饱和度高，色彩层次丰富，图像色彩还原真实，能完美的复制原作，满足艺术爱好者欣赏，艺术爱好者们不用支付昂贵的价格就能拥有经典油画。