查询词典 ice breaker

Vacuum circuit breaker has been developed for 20-30 years. It has great development potential as power circuit breaker.

真空开关是最近二、三十年发展起来的新一代开关电器，是一种极具发展潜力的电力开关。

In this paper, associated with the key problem of 550kV SF6 high voltage circuit breaker which is used in GIS of three Gorges project, the mathematical models of static electrical field and one-dimensioned and two-dimensioned gas flow field during the overall breaking process in arc chamber of circuit breaker are developed. On the basis of gas discharge theory, the criteria to judge the interruption success is determined.

本文结合长江三峡550kV GIS中SF6断路器的科技攻关项目，建立了断路器开断过程中灭弧室内静电场、一维气流场、二维气流场的数学模型；根据气体放电的基础理论选定了衡量断路器能否成功开断的标准，并通过一维和二维气流场的有机结合，有效地解决了原二维气流场计算软件无法计算有载开断的难题，具有较强的工程实用性。

According to the technical requirement of 800 kV tank SF6 circuit breaker and aiming at the initial structure of bushing of circuit breaker, the numerical calculation of electric field and analyses of insulating performance were conducted based on the technical and engineering conditions.

以800kV罐式SF6断路器为主要研究对象，根据超高压断路器产品的技术要求，针对断路器出线套管初步设计结构，在满足产品技术条件和工程要求前提下，进行基于电场数值求解绝缘性能分析。

The complete set equipments of ball mill, crusher, magnetic separator, flotation machine, spiral sorting machine and dryer, etc are suitable in selecting black and non-ferrous metal such as iron, copper, gold, silver, lead, zinc tungsten, molybdenum, tin, manganese, etc and nonmetal mine such as fluorite and graphite. The sand and crushed stone detritus equipments like jaw breaker, counter-attack breaker, sand-maker, shaker, sand washer, conveyer, etc apply to constructions of airport, railroad, highway, common freeway and architectures of national large-size bridge, cross-harbor tunnel, land tunnel, new high-level building etc.

球磨机、破碎机、磁选机、浮选机、螺旋分级机、烘干机等成套选矿设备，适用于选铁、铜、金、银、铅、锌钨、钼、锡、锰等黑色、有色金属矿及萤石、石墨等非金属矿；颚式破碎机、反击式破碎机、制砂机、振动筛、洗砂机、输送机等砂石破碎设备适用于飞机场、铁路、高速公路、普通公路及国家大型桥梁、海底隧道、陆地隧道、新型高层楼房等建筑材料制造行业。

Parameters of self-energy circuit breaker for 252kV50kA GIS are set according to the technical and developing demand of it in this thesis. Vertical arrangement and principle of self-energy arc-extinguishing are selected to develop this breaker.

本文针对252kVGIS用自能式断路器的技术要求，并结合目前252kVGIS的发展要求，确定了断路器的各项参数，并采用立式布置方式与自能灭弧原理设计开发该断路器。

3 A fuseholder or circuit breaker provided as a part of an appliance shall be acceptable for the particular application and shall not be accessible from the outside of the appliance without opening a door or cover, except that the operating handle of a circuit breaker may project outside of the enclosure. A fuseholder shall be so installed that no uninsulated live parts other than the screw shell or clips of the fuseholder are exposed to contact by a person removing or replacing a fuse.

18.3保险盒或电路断路器作为电器的一个零件可被特殊电器所接受，并在电器上的门或盖未打开的情况下，除了电路断路器的操作手柄伸出了外壳，都不能接触到保险盒或电路断路器，保险盒装好，若更换或取走保险时，除了螺钉盖及保险夹可同人体接触之外，不能有其它的导电活动件裸露同人体接触。

Multi-Function Ice Breaker Tug/AHTS (Anchor Handling Tug Supply Vessel) is a new type of ship which possesses the strong ability of offshore working service, and also can provide some special working service to platform in the bad environmental condition of ice.

破冰型多功能海洋工程船是一种既具有较强海洋工程作业能力，又具有能在寒冷结冰的恶劣环境条件下，为海洋石油工程提供多种特种作业服务的新船型。

The sea ice frozen on polar ocean forms a new interface between the upper ocean and the lower atmosphere. Sea ice plays an important part in the climate and environment system of Earth through its modifying role in radiative and energy balances, prevent the exchange of heat and moisture between the ocean and atmosphere. The salt reject during processes of sea ice freezing affects the ocean structure and circulation. Sea ice also affects the weather and climate at the South Ocean and Antarctic continent.

在极区，海冰的形成在海洋上部和大气下部之间构成了新的交界面，改变了大洋表面的辐射平衡和能量平衡，隔离了海洋与大气之间的热交换和水汽交换；海冰冻融过程影响着大洋温、盐流的形成和强度；海冰对南大洋和南极大陆气象、气候有重要的影响，在气候环境系统中起着重要的作用。

The comparison of time spent on MSA migration in deeper glacier ice of Antarctic Peninsula and that in the surface infiltration congelation ice of mid latitude glacier suggests that the quick formation of interlinked network of veins in ice, higher temperature and more water content of the ice probably may sever as the promoting factors for the MSA migration.

南极半岛 MSA迁移过程需要很长时间，而表层渗浸-冻结冰层中 MSA迁移过程很快出现，说明冰中脉状纹理的加快形成、较高冰川温度和冰层中的较大含水量等因素会对 MSA"迁移"进程起促进作用。

The thesis reviews the concerned study status of domestic and overseas first, then make factor analysis for ice flood, Partial Least-square model, Artificial Neural Network based on Genetic Algorithm model, Support Vector Machine model for ice drift, ice freeze and ice break are established. The results are reasonable and precise.

首先阐述了国内外有关研究现状，然后对影响黄河宁蒙段凌汛的三大因素(热力因素、动力因素、河势因素)进行了理论分析，在此基础上分别对流凌日期、封河日期和开河日期研制了偏最小二乘回归模型、改进人工神经网络模型和支持向量机模型，试预报结果表明，所建立模型精度高，预报结果令人满意。

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？