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Vault sedimentations basically happen in buckle arch and phase of excavate of bottom land system, be out of shape with the earth's surface corresponding, if buckle excavate of system of land of arch construction, bottom, steel to prop up timbering,compare seasonable, construction technology is sound, can prevent earthy system effectively to be out of shape flabbily continuously.

拱顶沉降主要发生在扣拱以及下部土体开挖阶段，和地表变形相对应，假如扣拱施工、下部土体开挖、钢支撑支护比较及时，施工工艺合理，可有效防止土体持续松弛变形。

Followingly, the rockingperformance is studied and based on the simulation, gaining the damage deformation picture of every part of bottom structures, and the changing circumstance of maximum stress and strain. Following this, the essay discusses the influence of collision capability that impacted by the rocks which have different shapes, dimensions and different collision places, obtaining the general conclusion of loads and deformation of the bottom structures based on the results of non-linear finite element program.

并以此为基础对触礁船船底结构触礁性能进行了研究，得到了触礁船船底各部分构件的损伤变形图，构件最大应力应变值的变化情况；讨论了不同的礁石形状及大小以及不同的触礁位置对触礁船船底结构碰撞性能的影响，以非线性有限元程序的计算结果为基础，取得了船底结构触礁时各构件的受力及变形分析的一般性结论。

Plastic packing bag including: PP bag, PE bag, PO bag, air-bag, zip lock bag, and other heterotypical bag. Goods form including: plat opening, round bottom, square bottom, double folded, single folded.

塑料包装袋：PP袋，PE袋，PO袋，汽泡袋、骨袋、以及其他客户所需异形包装，产品形状多样：平口，圆底，方底，双折边，单折边。

First,daubing a board with lacquer and dope as bottom layer and making the surface of this bottom layer smooth by grinding ,hen,drawing all sorts of ve-ins you liked by using colorful lacquer on the surface,by lacquering different thickness,bring changeful light andsh-ade surface with strong stereo,in the process of painting,in order to represe-nt the obgect more reality.we usually use some material such as precious st-one,eggshell,gold,silver,stannum,by enchasing process to make the printi-ng more rich and colorful,at last,grind-ing the surface and hooding it with tre-nsparent lacquer,just about thegrinding is embodiment of FUZHOU's painting skill,so we call it lacquer painting.

先以漆和瓦灰按脱胎工艺技法在木板上上漆打底、磨制光滑，然后用调好的色漆在底板上层层描绘出各种纹样，利用上漆的厚薄不均使画面产生富于变化的明暗调子，从而具有立体感。在作画的过程中，为了更好的表现物体，还根据画面内容的需要，采用宝石、螺钿、蛋壳、金、银、锡等材料进行镶嵌，使画面层次更加丰富。最后经打磨并罩上透明漆用细瓦灰与生油推光，正因为&磨&体现了福州漆画的独特工艺故称为&磨漆画&。

It still can be quickened river, river, laky the inorganic that waits for deposit of oxygen of bad news of riverbed bottom mud changes a course, on the spot eliminates bottom dirt to catch, pick up oxidation is reductive, prevent the pollution that dredge causes.

它还可以加速江、河、湖泊等河床底泥耗氧沉积物的无机化过程，就地消除底泥污染，回升氧化还原，避免疏浚造成的污染。

In the oxygen steelmaking processes, material from the blast furnace saturated with carbon is placed in a vessel capable of holding some 100 ~ 300 t of hot metal. Oxygen is then lanced from above the bath for about 15 min, or alternatively a mixture of oxygen and propane is blown up through tuyeres in the bottom of the vessel (bottom-blown).

在氧气炼钢工艺中，把来自于高炉的含饱和碳的铁水兑人一个容量约为100一300吨的转炉中，然后用氧气从金属熔池上面向熔池喷吹约I5分钟，或者通过熔池底部喷嘴喷入氧气和丙烷的混合气体。

One manway shall be sited below the bottom tray for inspection and cleaning of the bottom only and one manway shall be sited above the top tray.

应安装一个人孔于塔盘的底部，这样仅为了底部的检验和清洁，也应安装一个人孔于顶部塔盘的上方。

Through designing of composition and structure of the bioactive graded coating,innerstress and its distribution in the coating were analyzed and calculated, the resultsshowed that when composition distribution coefficient n was 1.5, a reasonable stressdistribution could be got, that was at the beginning of deposition the suspension containingrichly BG granules was used so that a rich BG granules layer, a good transitional layerbetween BG layer at the bottom and the coating could be obtained at the titanium alloy side,the bottom of the coating; the stress value near the interface and surface and its character,pressure stress or tensile stress, were decided by the character of its composition itself.Changing composition distribution coefficient n could only change the variation tendency ofstress in the coating, but did not change the stress distribution rule in the coating. Thethinner the coating is, the sharper stress variation in the coating is, which does not mean thatthicker coating is better because the thicker the coating is, the little the permitteddeformation of coating is, so the coating thickness should be thinner, for example, about50μm for bending applications, but for applications only bearing pure shear stress, such asroot of tooth implant, the coating can be thicker little, for instance, about 80～100μm. The study on electrification characteristic and electrophoresis deposition of HAand BG granules in aqueous and non-aqueous solution system found that EPD almost didn'toccur in aqueous solution system. However, because HA granules take position charges inabsolute alcohol, a homogeneous EPD be carried out on the cathode titanium alloy slice, but taking negative charge in absolute alcohol the BG granules not be deposited on the cathode. A guided HA crystallizing, 100～300nm, on surface of the BG granules be realized by metathetical reaction, which cover BG granules with HA microcrystals and make the covered BG granules taking position charges in absolute alcohol, sequentially realize the EPCD of the BG and HA granules on the cathode, so it is feasible to make a titanium alloy/BG/HA bioactive graded coating by making use of EPCD technology. The corrosion experiment of rich boron bioglass coating and plasma spray coating showed that split phase, rich boron and rich silicon phase, occurred during its preparation. In basic medium the corrosion behavior of 〓 BG coating showed uniformity corrosion, the corrosion mostly occurred at rich boron phase area, therefore batch formula design of BGshould avoid the occurring of split phase. The corrosion appearance of plasma spray coatingappeared a non-uniform corrosion, mostly occurred at the edge of the laminated HA moltendrops, and emerged an accelerated corrosion tendency, which will easyly lead to corrosioncrackles extending to the interface and the happening of osmotic interfacial corrosion, thatmay be one of the major reasons leading to the coating cracking-off in the later period. Thetesting results of thermal expansion coefficient of 〓 and 〓BG showed the thermalexpansion coefficient of 〓 BG matched with that of titanium alloy better, and 〓 BG couldsinter with titanium alloy into densification enamel layer at low temperature (720℃).

将Ti6Al4V合金在1000℃下进行真空热处理会降低其力学性能，且合金内的V元素会向表面富集，因此，钛合金真空热处理和表面涂层的烧结温度不能过高，即应低于其相转变点；通过对生物活性梯度涂层的组成和结构的设计，分析和计算了梯度涂层内的应力大小和分布，结果表明：对于本研究，当成分分布系数n=1.5时，可以获得较合理的涂层力学性能，即在沉积开始时，采用富含BG颗粒的悬浮液，以便在钛合金侧获得同底层BG有良好过渡的富BG涂层；梯度涂层界面和表面的应力大小、性质由材料组成本身的性质决定，改变成分分布系数，只能改变涂层内应力变化的趋势；涂层的厚薄不影响涂层内的应力分布规律，但涂层越薄，涂层内的应力变化越快，但这并不意味着涂层越厚越好，因为涂层越厚，涂层允许的变形越小，对于应用于弯曲受力部位的涂层而言，涂层应薄一点为好(50μm)；而对于仅纯受剪切应力的部位，如牙根种植体，涂层可适当加厚(80～100μm)；通过对HA和BG颗粒在水溶液体系和非水溶液体系中的带电特性和电泳沉积的研究发现，它们在水溶液体系中很难发生电沉积；在无水乙醇溶液中，HA颗粒带正电，可在阴极钛合金片上发生均匀的电泳沉积，而BG颗粒则带负电荷；利用复分解反应法，可以制得100～300nm的HA，通过诱导HA在BG颗粒表面结晶，可对BG颗粒进行表面包覆，获得了被HA包覆的BG颗粒，改变了BG颗粒表面的带电特性，使BG和HA颗粒在无水乙醇中均带上正电荷，从而实现了HA和BG颗粒在阴极上的共沉积。

The high rise operation mechanism mainly is the fluid cylinder that the control points a top and bottom arm to luffe, and the hydranlic moter to control top and bottom arm turns around.

本次设计以徐州海伦哲工程机械有限公司研制开发的&GKZ14型高空作业车&为研究对象，对该车上的液压系统进行设计。

From the above observations, it was deduced fragmentation process of the shell, and concluded that fragmentation of the explosive shell with bottom concave will made as soon as it breaks away from gun muzzle resulted from overburn of material at the bottom co.

根据上述结果，推测了这发弹的破碎过程，并得出结论，这发底凹榴弹出炮口即发生破碎是由于底凹部材料过烧引起的。

A carrier gas such as nitrogen is directed through line 20 and valve 22 to connect with line 26 and mix with the gas sample.

如氮气之类的载体通过管线20和阀22引入，与管线26相通，与气体样品混合。

But for the most part, knaves and parasites had the command of his fortune

然而支配他的家产的大多是恶棍和寄生虫。