滑

When the surface is considerably agitated there are no skaters nor water-bugs on it, but apparently, in calm days, they leave their havens and adventurously glide forth from the shore by short impulses till they completely cover it.

在湖水激荡的时候，便看不到掠水虫和水蝎了，显然只在风平浪静的时候，它们才从它们的港埠出发，探险似地从湖岸的一面，用短距离的滑行，滑上前去，滑上前去，直到它们滑过全湖。

The design method is described, and the calculation results are presented under the standard air conditioning condition. The working process of the two-stage expander is discussed, and the difference between the two-stage expander and the conventional one is stated. In addition, the influence of the dip angle on the expansion chamber volume is analyzed. The results show that the dip angle has little effect on the expansion chamber volume and it is suggested that the effect may be neglected in the expander design.

介绍了该膨胀机的设计方法，给出了标准空调工况下的计算结果，详细讨论了两级旋叶式膨胀机的工作过程，并对两级膨胀机与传统旋叶式膨胀机的区别进行了论述，最后分析了滑片倾角对工作腔基元容积的影响，结果显示，滑片倾角对工作腔基元容积的影响很小，在膨胀机的设计过程中忽略滑片倾角的影响是合理可行的。

Methods The location,degree and angle of inclination of lumbar facet joint s were measured in 125 cases with 131 spondylolisthesis.

方法对 12 5例 131个滑椎的滑脱部位、程度及滑椎小关节面倾斜角进行测定。

Three are three major actions that Mn effects fracture behavior in the alloy at room temperature, as follow: One is that Mn fines grains, antiphase domains and weakens dislocation clog, which retain formation of cleavage crackle. The second is that Mn decreases APB energy and promotes slop and cross slip, in particular, a large number of cross slip make deformed APBs transform from line type into zigzag type and the APBs interact and cross each other, resulting in propagation of cleavage cracks. The last is that Mn raises the relative proportion of cleavage strength to grain-boundary strength and then restrains formation and propagation of cleavage crack.

Mn对合金室温断裂行为的影响主要反映在三个方面，一是Mn的存在细化晶粒和反相畴，使得位错塞积程度减小，从而阻碍解理裂纹源的生成；二是Mn的存在提高解理强度与晶界强度的相对比值，从而抑制了解理裂纹的形成和扩展；三是Mn降低反相畴界能量、促进超位错的滑移、交滑移，特别是断裂前位错大量的交滑移使形变反相畴由直线型变为折线"Z"字型，反相畴界间的相互作用、相互交错阻碍了解理裂纹的扩展。

Aiming at a class of typical dynamic hysteretic models, a kind of sliding mode tracking controller based on dynamic sliding mode principle is proposed. A dual-phase convergent process is implemented by constructing an auxiliary sliding mode variable.

针对一种典型的动态迟滞模型，提出一种基于动态滑模原理的跟踪控制器，通过构造辅助的滑模变量来实现动态滑模控制的两阶段收敛。

The paper summarizes systematically the existing state of the structure of slide plate of turnout at home and abroad, improves and optimizes the structure of slide plate of speed-up turnout against the existing problems of slide plate of speed-up turnout such as failure tightening force, cracks in spring shim and pin, large surface resistance of slide bed-plate, difficulty in gauge adjusting and so on.

本文较为系统地总结了国内外道岔用滑床板的结构现状，针对提速道岔用滑床板存在的扣压力失效、弹片与销钉出现裂纹、滑床台板表面阻力大、轨距调整困难等问题，改进和优化了提速道岔用滑床板的结构。

The invention discloses a device for spreading machine docking with trucks, which consists of damping mechanisms installed on both side between the spreading machine and the roller; the damping mechanism consists of side plate 1, sliding block 2, flexible element 3, and shaft 4, the flexible element 3 is sleeved on the shaft 4 of which one end linked with spreading machine and the other with sliding block 2, side plate is on upper section of sliding block 2 and fixed on the machine, lower section of sliding block is linked with roller.

本发明公开了一种摊铺机与卡车对接缓冲装置，它为设置于摊铺机机身前端与推滚之间的左、右各一副阻尼机构(10)；所述阻尼机构(10)包括端板(1)、滑块(2)、弹性元件(3)和轴(4)，弹性元件(3)套于轴(4)上，轴(4)的一端与推铺机机身(5)相连，滑块(2)与轴(4)的另一端相连，端板(1)位于滑块(2)上段之外，并固定于推铺机机身(5)上，滑块(2)的下段与推滚(6)相接。

According to the structure and characteristics of slip-form construction, the granulation tower project to be based on the top elevation from start to carry out the assembly of sliding-mode platform, with variable cross-section slope-walled tower, taking into account the technical characteristics of slip-form construction, the proposed construction here, the variable cross-section made the slopes with variable cross-section level (internal reinforcement unchanged), and then adjust the thickness to die or continue to slip.

根据工程结构及滑模施工特点，本造粒塔工程拟从基础顶标高处开始进行滑模操作平台的组装，塔壁斜坡变截面，考虑到滑模施工的技术特点，建议施工此处时，将斜坡变截面做成台阶变截面，然后再改模调整壁厚继续滑升。

The objective is the slide of the tool. Create the 3D model of the slide in Pro/E. Then, the 3D model of the slide is transfered into the CAE software. There is structural analysis in ANSYS. The slide is calculated by static analysis of the structural analysis model. Based on the analysis result, the static intensity of the slide is determined.

分析TH65100卧式加工中心的前滑座，使用Pro/E软件建立滑座的三维实体模型，并将其导入ANSYS中，利用ANSYS软件的静力分析功能，对进给状态下的滑座做有限元计算，并根据计算结果校核滑座的静强度。

RESULTS: There were 20 mild slips with slip angles less than 31 degrees, 24 moderate with slip angles between 31 and 50 degrees, 20 slips were severe with slip angles between 51 and 90 degrees. In 61 cases, reduction was successful without being followed by AVN.

结果：20例患者轻度滑脱与滑脱，成角小于31度； 24例患者中等滑脱，成角介于31度和50度之间；20例患者严重滑脱，成角介于51度和90度之间。61例患者成功复位，随后无AVN并发。3例患者（2个女孩和1个男孩）发展成部分性AVN（ 4.7 ％）。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。