变化多的

It is obtained that the zone width of starting cut is about the first weighting step, the zone width of face is changing between 23 times of period weighting step, the zone width near intake entry and return entry is about 0.70.8 times of the first weighting step, the height of trapezoidal surface is basically subject to the location of the key strata and the deformation, breaking and instability form of the voussoir beams structure.

更多到切眼侧带宽大约为初次来压步距，工作面侧带宽在23倍周期来压步距间变化，进风巷及回风巷附近带宽约为0.70.8倍初次来压步距，内外梯台面的高度受制于关键层层位及所形成砌体梁结构的变形、破断和失稳形态。

objective to study mri diagnostic value on multiple sclerosis.methods mri examination data of 31 patients with multiple sclerosis were analysised retrospectively.results total 184 lesions were detectived in 31 patients.most lesions were located on white watter area beside the lateral ventricle,and a few lesions were located on the spinal cord,cerebellum,brain stem and corpus callosum.the shape of lesion can be circle or ellipse.the lesion showed as slightly long t1 and long t2 signal.the acute stage lesions can have enhancement.conclusions ms have characteristic findings on mri image.mri can show the patholoic changes,and provide strong evidence for clinic diagnosis of multiple sclerosis.

摘 要］目的：探讨多发性硬化（muliplle sclerosis，ms）的mri特征表现及其诊断价值。方法：回顾分析31例临床诊断为ms患者的mri检查资料。结果：31例共发现病灶184个，病灶于侧脑室旁白质区、半卵圆中心及皮层下区最多见，其次见于脊髓小脑、脑干及胼胝体，部分可见视神经受累，病灶呈卵圆形或圆形稍长t1、长t2信号，矢状位像见病灶与侧脑室垂直，急性病灶增强扫描有的可呈结节状、环状或斑点状强化。结论：在mri图像上ms有特征性表现，mri能反应ms病理变化，为临床诊断ms提供可靠依据。

Come 5 many years, the life of broadband network Chinese and working way brought the change of world-shaking.

5年多来，宽带网络中国人的生活和工作方式带来了翻天覆地的变化。

Methods From January 2003 to October 2006, polysomnography was performed on 120 children with adenoidal hypertrophy before and after adenoidectomy. Various polygraphic parameters describing the macro- structure of sleep and the microstructure of sleep were analyzed.

对120例行腺样体肥大切除术的儿童，分别于术前及术后1个月行夜间睡眠多导监测，比较手术前后宏观、微观睡眠结构的变化。

At present, two primary methods are used to deal with the source/sink term in advective and dispersive transport equation of suspended sediment when studying on estuary and coastal sediment movement.

目前在研究河口海岸泥沙冲淤变化中，对泥沙输运方程中的源汇项进行处理时，国内常用水流挟沙能力的方法，国外多以水流剪切应力为基础。

While this is caring child learning with respect to need parents, the psychological change that also wants pair of children is great and advertent, want to be communicated more with the child, discover the problem sees a doctor in time.

这就需要家长们在关心孩子学习的同时，也要对孩子的心理变化多多留意，要跟孩子多沟通，发现问题及时就诊。

The tail fin with two degrees of the robot-fish under the change of heavy load and the influence of characteristic of electromotor will make the distortion of transformation of speed and position synchronously, and bring on anisomerous flaping of the tail fin.

机器鱼多关节尾鳍受外界负载变化及伺服系统机械结构本身特性的影响会使速度和位置曲线失真，从而影响机器鱼的推进效率。

Other signs are inconstant, such as the presence of hollow feet, scoliosis, decrease of the auditive acuteness or diabetes.

其它症候变化较多，例如足部下凹、脊柱侧凸、听觉灵敏度的减退或者糖尿病的出现。

However, analysis of DNA methylation level indicated that the total DNA methylation levels were not significantly different between diploid and autotetraploid. Autotriploid showed a trend of low DNA methylation level. It implied that the alterations of DNA methylation levels were not linear with the autopolyploidy level in watermelon.

有趣地是，二倍体与四倍体西瓜相比DNA甲基化水准却未发生大规模的调整，而三倍体西瓜显示出较为明显的低DNA甲基化水准趋势，表明西瓜同源多倍化过程中其基因组DNA甲基化水准变化与其倍性不成线性关系。

Besides coccoid of Hp transformations, curve-bacilliform, long-bacilliform, short bacilliform, long threadlike, giant coccoid, glomerule, trophoplast, and very small "s" or "c" shaped Hp were found.

并根据Hp形态变化的顺序及表型，初步发现Hp由典型&S&或多螺旋形态变为杆状弯曲、长杆状、短杆状、然后变为球形、长丝体、巨球体、丝球体、原生质体的规律。

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。