查询词典 ice breaker

The thesis mainly concerns the following aspects: the relay protection and its trip-close circuit of two circuits transmission-lines are stand alone. The device has the ability of phase-trip that is owns transmission line single phase , 2 or 3phases fault only fault phase tripped.so as to making the power system contact as close as possible. The function of reclosing distribute into relay protection of line and breaker, so it is easy to get no-serious fault information of line protection and realize self-adapted multi pole reclosing. The breaker reclosing depend on the state of owns breaker andthe adjacent breaker. The criterion of serious fault and the sequence reclosing is simple and useful.

本项目具有如下特点：两回线的保护装置及跳、合闸回路完全独立；装置具有分相跳闸功能，即本线单相、两相、三相故障时均只跳故障相，使得故障时系统联系尽可能紧密；重合闸功能合理分配在线路保护和断路器保护中，充分利用了线路保护的信息实现无严重故障判别和分相顺序重合策略的自适应重合功能，由断路器保护根据断路器本身的工作状态和相邻断路器的配合关系实现重合出口；判断严重故障的判据及分相顺序重合闸原理简单合理，具有实用意义，降低了重合于永久故障对系统的冲击。

Therefore,a series studies of ice-pier vibration are performed from different aspects in this paper.The main work of this his thesis is summarized as follows:(1) Ice response spectra is proposed based on the idea of a seismic response spectra analysis of str .. uctures.Firstly,ice response spectra on the basis of power spectra density function is established;Secondly,based on the assumption of quadratic parabolic interpolation method,the nonlinear interpolation analysis method of ice response spectra is studied from both theoretical and practical points of view,and the successive computation formulas including ice displacement,velocity and acceleration response spectrum are deduced by Duhamel integral.Furthermore,to analyze the effectivity and applicability of the method, the real temporal curves of ice pressure are used to be studied.The results show that the presented method is more convenient and accurate to study the structural response induced by ice force,also it can be effectively applied in the design of ice resistance.

鉴于此，本文针对冰激桥墩结构振动问题从不同方面展开了一系列与之相关的研究，主要研究内容如下：(1)根据结构抗震反应分析思想提出了冰振反应谱，首先建立了基于功率谱密度函数的冰振反应谱；其次借鉴地震反应谱内插法的思想从理论和实际观点出发，假定在等距离微小时间间隔内冰荷载按二次抛物线规律变化，由Duhamel积分推导出冰振位移、速度以及加速度反应谱的一系列连锁公式，建立了基于非线性内插法的冰振反应谱，并利用实际冰压力时程曲线进行了冰振反应谱数值分析，为以后冰激结构振动的研究提供一种方便、简捷、精确的分析方法，也能够将其有效地应用到结构的抗冰计算中。

According to the aforementioned features and basing a new the oretical framework of measurement on ice-thickness and beneath-ice-surface water levels by distinguishing the physical characteristics of air, ice and water, the paper analyzes the laws of the resistance and capacitance of ice with conductive impurity, mixture of ice and water, water and air change as temperature changes, draws conclusions such as ice as a weak conductor, monotonic feature of ice and water, and introduces the design of the structure of a new-type of ice-thickness sensor, its measurement method, and its application in practice.

基于这一特点，笔者提出了利用空气、冰与水的物理特性差异实现对冰层厚度及冰下水位接触式检测的新思路，对含有导电杂质的冰、冰－水混合物、水、空气的电阻、电容特性随温度的变化规律进行了初步分析，并得到冰的弱导电性质和冰与水的电容区间单调特性，据此提出了冰层厚度传感器结构及其冰厚检测原理，介绍了新型冰层厚度传感器在实践中的应用。

From the sea ice motion data extracted from the MODIS and AVHRR images, it is found that the sea ice motion in the Bohai Sea is effected not only by prevailing winds but also by topographic steering, ocean currents and internal ice stresses. The extracted sea ice drift is similar to observed ice drift, and can clearly show the sea ice drift in the Marginal Ice Zone especially. It can compensate for the limitation of the local or single station observation.

利用MODIS和NOAA/AVHRR资料获取的渤海冰速资料的综合分析显示：渤海海冰运动，除受盛行风控制外，还受到复杂的海岸地形、流和冰内应力的共同作用，所得到的大范围海冰运动规律和多年历史观测资料分析结果基本一致，并清楚地显示了冰边缘带海冰运动的特征，弥补了局地、单站海冰观测的局限性。

Dependent on the past research in seaice, in Bohai Sea, in 2003-2004 winter and 2004-2005 winter with level ice for the target we open the field experiments to study the essential spectrum characteristic of ice, removing by testing means various nonessential factor for sea water in the fixing big ice plate, building up 170 growth conditions to look like under the natural condition, the growth expect different sample series; in 2004-2005 winter and 2005-2006 winter continue two pass to break thorough Bohai Sea in the ship to collect 59 sea ice sample that have the non-essential ice factors in winter, open the influence research that the field hangs sand to contribute to the spectrum of the ice body; in 2005-2006 winter, fast ice to open the field spectrum curves to coast and analytical research.

总结前人的研究成果和开展一系列的室内实验，在渤海—北半球纬度最低的结冰海域，于2003/2004、2004/2005 连续两个冬季以单层平整冰为目标开展实验研究一年生海冰的冰体本质光谱特征，在固定冰盘上以实验手段摒除各种光谱干扰因素，在自然条件下建立170 个生长条件近似、生长期不同的样本系列；于 2004/2005、2005/2006 连续两个冬季通过破冰船深入渤海采集59 个具有非冰体本质因素的海冰样本，开展悬沙对冰体反射光谱的影响研究；于2005/2006 冬季，针对沿岸固定冰开展光谱测量和分析研究。

The thickness of the ice cover on the wall surface heat transfer is greater than the thickness of it on the air heat transfer form. The thickness of the ice cover on the wall surface heat transfer along the way changes slowly, but it on the air heat transfer along the way changes significantly. Reducing the entrance velocity, lowering the wall surface or air temperature, the formation of the thickness of the ice cover will increase; in the 3D circumstances, The thickness of the ice cover was relatively uniform in the import of the U-turn model, the ice cover was gradual accumulation in the convex bank when the stream traversed the import of the U-turn model, the thickness of the ice cover in the convex bank was significantly bigger than the thickness in the concave bank. The temperature field under the ice cover tends to be complex because of the existence of the secondary flows. The temperature in the convex bank is greater than it in the concave bank. Compared with the data from experiments, the laws in the numerical simulation are similar with them in the experiments

模拟结果显示：二维情况下，运用壁面传热形成的冰盖厚度大于运用空气传热形成的冰盖厚度，壁面传热形成的冰盖厚度沿程变化缓慢，而空气传热形成的冰盖厚度沿程变化明显，减小入口流速，降低壁面或空气温度等，形成冰盖的厚度都会增大；三维情况下，弯道入口处凸、凹岸形成的冰盖厚度基本相同，进入弯道后，凸岸形成的冰盖厚度逐渐增大，而凹岸的冰盖厚度逐渐减小，受横向环流的影响，冰盖下水流的温度场趋向复杂，并且凸岸的温度小于凹岸的温度；与实验室实验所得数据相比较，数值模拟研究得到的规律基本符合实验规律。

The invention discloses a kind of ice-storage box of the refrigerator's freezing chamber in which the ice-cream can be put, it composes of ice-storage box itself which is set in the upper part of the refrigerator's freezing chamber, a ice-cream vessel which is set in the lateral part of the ice storage box and is dismountable juncture, the vessel includes the shell of the ice-cream vessel and the drawer which is set in the shell of the ice-cream vessel.

本发明公开了一种冰箱冷冻室中可放冰激凌的储冰盒，它包括设置在冰箱冷冻室上部的储冰盒本体，在储冰盒本体的一侧部设有一可拆卸连接的冰激凌容器，其包括冰激凌容器壳体及设在冰激凌容器壳体中可抽拉的抽屉。

Based on these studies, sea ice variations were combined with global climate change. The research fields about sea ice includes: the physical properties and processes of sea ice, together with snow cover, the ecosystem of sea ice regions, albedos of sea ice and its snow cover, mass balance of sea ice regions, sea ice and climate coupled model.

这些研究领域主要有：海冰及其表层雪的物理特性和过程、海冰区域生态特征、海冰区与气候相关的反照率和物质平衡研究以及海冰气候耦合模型等大的领域。

Ice Cream Machine, Pao-Pao Ice Machine, Continuous Ice Cream Machine, Ice Pop Mix Filling Device, Ice Pop Stick Fixture, Ice Pop Freezer, Ice Pop Draw...

冰淇淋制造机，泡泡冰制造机，泡泡冰机，冰棒制造机，硬式芋头冰制造设备，雪花冰制造机，绵绵。。。

Ice Cream Machine,Continuous Ice Cream Machine,Ice Pop Mix Filling Device,Ice Pop Stick Fixture,Ice Pop Freezer,Ice Pop Drawing Device,All Purpose Ice...

冰淇淋制造机，冰棒制造机，硬式芋头冰制造设备，雪花冰制造机，绵绵冰制造机，水果冰制造机，甜筒脆饼煎饼。。。

Objective To study the effect of chitosan in the prevention of fibrous scar formation in the epidural space after laminectomy.

目的 观察选择性脊神经后根切除术椎板切除后硬膜外几种防瘢痕粘连物质的作用并探讨其机制。

On his way to the lift, he looked back to us or was it me his eyes pointing?

当他要进电梯时，他回头看我们（或者说是我，他的眼光？