查询词典 non-degenerate

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。

It is expressly agreed that after the expiry of such term,the Buyer will not plead non - confor- mity of the goods, or make a counterclaim thereon, in defence to any action taken by the Seller against the Buyer for non - performance of this Contract.

双方明确约定在此期限届满之后，买方将不以货物不符为由或作出反诉以对抗卖方因买方不履行本合同而提出的任何诉讼。

It is expressly agreed that after the expiry of such term,the Buyer will not plead non - confor- mity of the goods, or make a counterclaim thereon, in defence to any action taken by the Seller against the Buyer for non - performance of this Contract.

13.4 若免费的原因持续存在6个月以上，任何一方均有权不经过通知对方即可终止合同。

Learn more products please contact us shopping bag is the new generation of non-woven material, moistureproof, environmental protection, flexibility, light, easy to decompose combustion, non-toxic, without excitant, rich color, low price, and can be reused, etc.

了解更多产品介绍欢迎联系我们无纺布购物袋是以新一代环保材料，具有防潮、透气、柔韧、质轻、不助燃、容易分解、无毒无刺激性、色彩丰富、价格低廉、可循环再用等特点。

The significant advantage of our formulation in that one does not need to carry out the integration over canonical momenta in generating functional and one only requives the andto be invariant under the non-local transformation in non-Abelian Chern-Simons theory.

这里给出的形式的显著优点在于勿需作出相空间生成泛函中对正则动量的路径积分。在非Abel CS理论中的非定域变换下，仅要求和不变，即可导出正规顶角间的一些关系式。

According to the causes,the surface defects can be divided into blister containing non-metallic inclusion,blister without non-metallic inclusion and "raindrop","gills","mountained".

根据产生原因可分为含有非金属夹杂的气囊表面缺陷；不含有非金属夹杂的气囊表面缺陷；由气泡产生的&雨点&状表面缺陷；&鱼鳞&状表面缺陷；&山水画&状表面缺陷。

The main features of the river basin eco-economic system are as follows: it is an open and non-balanced complex system; there exist non-linear mechanisms; and there are lots of random fluctuations with their amplifying mechanism and mutative qualities inside and outside the system.

流域生态经济系统的特征主要表现为流域生态经济系统是一个开放的复杂系统；是一个非平衡和复杂系统；存在着非线性作用机制；并且系统内外存在着大量的随机涨落及其涨落的放大机制和突变性。

More recently, however,non-chlamydia trachomatis and non-mycoplasm NGU has been accounted for 50% of the total of NGU. Most patients with recurrent symptomatic or persistent NGU receive negative test results for chlamydia trachomatis and mycoplasm, and the cause of such NGU is unclear.

在临床上常见的是迁延不愈以及衣原体、支原体均为阴性的NGU患者，对于该类患者的治疗已成为性病学上较为棘手的问题，并引发了人们对于其他病因研究的兴趣。

More recently, however,non-chlamydia trachomatis and non-mycoplasm NGU has been accounted for 50% of the total of NGU. Most patients with recurrent symptomatic or persistent NGU receive negative test results for chlamydia trachomatis and mycoplasm, and the cause of such NGU is unclear.

NGU的病原体多种多样，过去多认为主要是沙眼衣原体和支原体，但是近来调查发现非衣原体非支原体性NGU可以占到NGU总数的一半以上。

Methods:According to the cause of disease and the condition of neoformative bone,510 patients with skull defects were diveded into 4 types:decompression type,non-decompression type,neoformative bone type and non-neoformative bone type.

510例颅骨缺损病人根据不同病因分为减压型和非减压型两种类型；再依据骨窗区新生骨形成与否分为新生骨形成型和无新生骨型两种。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。