共时的

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。

Noncollinear second-harmonic-generation processes involving an unfocused laser ham and itS scattered radiation produce one or more cones of phasematched second harmonic.

激光束与其散射光束在晶体中发生非线性和频作用，在满足非共线相位匹配条件时，可观察到二次谐波环的现象。

In order to improve the interfacial adhesion between the matrix and inorganic particles, the SiO2 nanoparticles were modified with polymethyl methacrylate and silicane couplant KH507 respectively, and then the SiO2/PVC composites were prepared via the melt blending method. The microstructure and mechanic properties of SiO2 nanoparticle filled PVC composites were investigated by FT-IR.

利用表面原位接枝聚合在纳米二氧化硅颗粒表面引入聚甲基丙烯酸甲酯高分子链段，用共混法制备了nano-SiO2/PVC复合材料，研究了不同界面特性时SiO2/PVC复合材料的力学性能。

Corneas and subbasal nerve fibers were examined by confocal microscopy at 1 day, 1 week, 1 month, 3 months and 6 months after the operation.

手术患者分别在术后1d、1周、1个月、3个月、6个月时行角膜共焦显微镜检查，比较两组患者术后角膜上皮下神经纤维再生的情况。

Taxus cell lines were cultured on fresh medium succeedingly at regular intervals andantioxidant such as PVPP was added into culture medium in order to prevent browning of taxuscultured cells.

3红豆杉离体培养细胞在增殖过程中，自身富含的酚类被氧化成醌类物质，导致细胞褐变甚至死亡，在与农杆菌共培养时褐变现象更为严重。

Similar species are often found to partition resources where they are sympatric.

相似物种在共域活动时经常发生资源分配的情形。

A young woman reads her horoscope at work, goes home, and fantasizes that she is being fought over by two nude men.

一个年轻女性工作时读占星术的书，回到家，幻想着与两个裸体男子共舞。

When micro electrolysis produces Fe2+ in the anode, forms Fe3+ with the O2 response, the production has strong adsorptive capacity Fe3 it is very easily one kind of active colloid flocculates, may SS and the colored groups and bases adsorption altogether sinks the water in obtains the elimination.

微电解时在阳极产生Fe2+，很容易和O2反应形成Fe3+，生成具有强吸附能力的Fe3它是一种活性胶体絮凝物，可以把水中SS和有色基团吸附共沉而得到去除。

There are then identified Chixiaodou is tired of Guiwu saying,"the age of miscellanies," saying:"Gong Gong has no wit, the winter solstice as an infected dead ghosts, afraid of red bean, it is a day for Douyu tired of."

还有接指认赤小豆就是厌鬼物的说法，《岁时杂记》云：&共工氏有不才子，冬至日死为疫鬼，畏赤豆，故是日作豆粥厌之。&

Underground whole-space transient electromagnetic method was tested at the driving face of a drift in a coal mine for detecting water-bearing zones ahead of tunneling.

根据初探结果，采用不共面同轴偶极观测方式时，UWTEM在巷道掘进头前方的有效探测范围约为70m，巷道每掘进50m进行一次跟踪探测。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷