质点

According to the national standards(GB/T50452) and the allowable value of panicle vibration velocity at bottom of high-station base,the impact of the superposition of ground traffic vibration and subway vibration to timber structure of Bell Tower and its high-station base is comprehensively evaluated.

9依据国家标准(GB/T50452)和高台基底部质点振动速度容许值，对地面交通振动、地面交通振动和地铁振动叠加对钟楼木结构和高台基的影响进行了综合评估。

The part I of the experiment will be used a digital particle image velocimetry system to measure instantaneous and non-invasive ensemble-averaged flow fields inside the glass curtain of the ACC. Particularly for the reduced scale test section of ACC that are used in incinerator, we are used to observe the streamline distributions at the middle plane inside the glass curtain in various inlet velocity of the blowers for the one-row, two-row, three-row ACC and the glass curtain with and without holes.

本研究初期将藉由数位质点显像测速仪定量且非侵入式的量测技术，针对焚化炉用空气冷凝器的缩小维度测试件，在不同入口风速、冷凝管排数、玻璃帷幕有无开口方式下，观测其玻璃帷幕内之流体全域速度场。

In addition, the paper calculates the resident position of water current down to the Xiamen Bay during spring tide at flood season.

通过对九龙江河口湾洪水期和枯水期含沙量等值线的分析，描述了河口湾内悬浮泥沙的时空分布特徵及其在涨潮和落潮期间的变化情况，并对洪水期大潮湾内水质点的滞流点位置作了计算。

This series product, have a strictly control quality of production craft, especially pop out aluminum paste's whiteness, sparkle, lightness, metal effect etc.

详细介绍：本系列产品，严格控制生产工艺的品质点，特别突出了铝银浆的白度，或闪度，或亮度，或金属感等性能。

Dynamic calculation model was series-wound more particle.

动力计算模型采用的是弯剪型串联多质点系。

This is because the jet particle velocity of the swirling water jet is three-dimensional, and its rock-breaking manner mainly has a slopping impact. Thus, the interference from returning fluid is less. All these aspects make it easy to draw and shear the rock surface.

计算结果与试验一致，表明旋转射流具有较强的破岩能力，其原因是旋转射流的质点具有三维速度，破岩时以倾斜冲击为主，易于在岩石表面形成拉伸和剪切破坏，回流的干扰较少。

Therefore, the choice of single mode in the examination and the frequency-thick band of mode has been given a particular illumination separately in the paper, following a relative numerical simulation. And a multi-cyclical sine signal modulated by Hanning window is used to simulate the excitation wave, and then an inspected ring of nodes is established to receive the echo, finally how the length of the circumferential cracks, the width of the axial cracks and the degree of the thickness-reduce effect the result is explained through the analysis of the result, further more, the reflection factor in the defect has been calculated.

因此，本文也就单一检测模态的选择以及模态频厚积段的选择分别予以了阐述，并有针对性的进行了数值计算：应用Hanning窗调制的多周期正弦波模拟单音频激励信号，并设置监测质点环接收回波，通过分析说明了管道的周向裂纹、轴向裂纹以及点蚀缺陷对缺陷回波所产生的影响，并进一步计算了缺陷处的反射系数。

The main content of this paper is the establishment about a multi-particle model of train traction calculation and simulation software on CRH2 electric multiple unit railcar set.

本文研究的主要内容是多质点列车牵引计算模型的建立和针对CRH2型动车组的牵引计算软件的仿真。

Expressions of velocities and accelerations in usual coordinates are derived by means of matrix.

采用矩阵方法对常用坐标系中质点的速度和加速度表达式作了统一推导。

MethodsCSF was extracted from patients with GBS and controls, and proteins were precipitated with icecold acetone. Isoelectric focusing electrophoresis was employed as the first dimension and sodium dodecylsulfatepolyacrylamide gel electrophoresis was employed as the second dimension.

方法分别取GBS疾病组和对照组的新鲜脑脊液，冰丙酮沉淀法提取总蛋白，进行第一向等电聚焦电泳和第二向十二烷基磺酸钠聚丙烯酰胺凝胶电泳分离蛋白质组，Image Master 2D图像分析软件对分析胶进行比较分析，识别差异表达明显的蛋白质点。

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。