不变化的

The dominant mechanism of the periodical variation of the Kuroshio bend and the breaking off of anticyclonic eddies is the frontal instability.

非线性平流作用是吕宋海峡黑潮弯曲发生周期性变化的主要原因，吕宋海峡黑潮锋附近的锋面不稳定机制是决定黑潮弯曲周期性变化及反气旋涡从黑潮弯曲中脱落的主要物理机制。

It was shown that the 3D deformation in the tunnel at soft rock was obvious at F7 fault and phyllite section, with the characteristics of large deformation and longitudinal displacement developing in the opposite direction of work face and being stable at a distance about 2.0 times of tunnel diameter from the work face. And the 3D displacement of tunnels at F7 fault zone developed in an uneven symmetrical way, while there was good consistency for 3D deformation at slate section. Furthermore, there was a mutally verifying relationship between 3D deformation and ground stress distribution of tunnel region.

结果表明，F7断层和千枚岩地段软岩隧道三维位移十分明显，具有隧道大变形特性，其纵向位移背离开挖面方向发展并在相距开挖面约2.0倍洞径时趋于稳定状态；F7断层地段隧道三维位移呈不均匀对称地发展变化，而板岩地段三维位移变化的一致性较好；隧道三维变形规律与隧道区域地应力场的分布存在相互印证关系。

Additionally, the type of methyaltion changes in plants after seed and seedling irradiation were different.

另外，甲基化和去甲基化变化类型的分析也表明种子和幼苗辐射后发生甲基化变化的趋势也不相同。

The influence of stray capacitance and its change on the C/V circuit is discussed, and it can be concluded that the influence of stray capacitance and its change is very little comparing to that of the excitation signal.

分析了非理想条件下，杂散电容及其变化对C/V转换电路输出的影响，并得出一点结论：相对于激励信号对C/V转换电路输出影响来说，杂散电容及其变化的影响较小，几乎可以忽略不计。

While global warming is undoubtedly an important factor, it does not fully account for these extreme and unusual weather patterns.

全球变暖无疑是气候变化的一个重要因素，但是它却不能完全解释这些异常和极端的天气变化。

Britain is not a truly fluid society; upwardly mobile.

英国不是一个真正变化大的社会；向上变化的。

Incomplete thin rim - like enhancement of the tumor periphery was seen on CT enhanced scan in 10 cases of 14 cystiform ,complete enhancement in 3 cases .

增强扫描14例囊性病变中有10例出现病灶边缘不连续的较薄环形增强，3例连续环行强化，门静脉期13例均无变化；1例无增强表现。7例实质性病变在增强1min后病灶轻度强化，3—8min后病灶出现延迟增强，密度等于或大于同层肝组织，扩张的胆管无变化。

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 paper investigates the interaction between variation of precipitation landscape patterns and runoff, and results show that: 1Precipitation in upper-middle main Jinghe watershed over 40 years descends little, and the isograms of inclination rate of precipitation are between -4.9mm/10a to -11.3mm/10a.

本文研究泾河流域降雨-景观-径流变化的相互作用，结果表明：①泾河流域中上游主流域40多年来的降水具有微弱下降趋势，降雨倾向率为-4.9mm/10～-11.3mm/10年；泾河流域马莲河分流域，年降雨量表现为不变或微弱下降；②泾河流域1986年～2000年15年之间，景观结构变化不大，一直以草地景观和耕地景观为主。

When scanning, from light transmitter beams shines on the bar code on the basis of the photoelectric detector from bar code on the binvalidation of the reflected light intensity to respond to that, when scanning a white spot sweep to the surface or in two in the space between the black line, the reflection of light intensity, high current output a detector; when the scan-to-black lines, reflected light, detector output UN-effectual, on the basis of narrow-striped width or length of time made in response to changes in light and shade with bar code and converted to a little different current signal, after a post to the bezze codec.

扫描时，从平发射器发不入的平束照在条码上时，平电检测器根据平束从条形码上不直射返来的平不不弱度息不入回答，当扫描平不背扫到白纸背上或处于两条暗线之间的空缺处时，不直射平不不弱，检测器输不入一个不小电流；当扫描至暗线条洋时，不直射平不弱，检测器输不入小电流，并根据暗线宽或广息不入工夫不幼短差别的反响，随着条形码明暗的改变变化为人小差别的电流暗记，经过放不小后运输到泽码器洋去。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。