课题

Abrupt climate change is one of most important manifestation of climate change, is a integrative science of physics and climatology.

气候突变是气候变化的重要表现形式之一，是一个典型的物理学与气候学的交叉性科学研究课题，是非线性科学研究的重要领域。

For a long time the influence of complex terrain in mountain area on local weather and climate is always the basic and crucial problem in mountain climatology.

中尺度山地复杂下垫面的热力和动力作用对局地天气和气候的影响始终是山地气候学的基本研究课题。

Some progresses of research on sea ice and clime, and international programs on Antarctic sea ice are reviewed.

结合目前承担的研究课题，对国际南极海冰与气候研究的前沿动态和相关的国际计划进行了综述。

A three-dimension orientation tracking device is developed based on the algorithm, in which the sensor employs a three-axes fluxgate magnetometer and a clinometer.

本课题在国内首次完整地创建了直流式六自由度电磁跟踪算法，实现了一套完整的直流式六自由度电磁跟踪系统。

In this paper,the CLIQUE algorithm and some of its enhanced algorithms are emphatically analyzed.

聚类分析是数据挖掘研究领域中一个非常活跃的研究课题。

As a result, it is an urgent realistic problem that land subsidence induced by tunneling is forecasted and controlled so as to ensure the safety of close-by building and buried pipeline.

因此，如何在隧道施工过程中防止坍塌并可靠地预计和有效地控制施工所引起的地面沉陷以保护工程沿线建筑物和地下管线的安全，已成为城市地铁工程建设中必须解决的一项重要课题。

Furthermore, bad economic loss and social effect can be brought about. As a result, it is an urgent realistic problem that land subsidence induced by tunneling is forecasted and controlled so as to ensure the safety of close-by building and buried pipeline.

因此，如何在隧道施工过程中防止坍塌并可靠地预计和有效地控制施工所引起的地面沉陷以保护工程沿线建筑物和地下管线的安全，已成为城市地铁工程建设中必须解决的一项重要课题。

Another research topic is evaluated lightning induced voltages on nearby overhead-lines. Lightning is a transient, high-current discharge whose path length is measured in kilometers. During flash, neighbor electromagnetic field change violently, that would induce voltages on close-by metal.

另一研究课题为，非直击雷害造成邻近区域内架空线上的感应电压的探讨，雷击闪络可视为长距离的放电暂态现象，过程中会使得雷击周遭的电、磁场剧烈变动，将会在邻近的金属物件上感应出电压造成二次的伤害。

The characteristic of a trefoil knot is: three independent faces becoming a linked closed curve, or single side curve.

该展品是拓扑研究的课题之一，具有单侧曲面特征。

Thin-walled tube with closed section is commonly used in large space structures.

大型空间结构的热—结构分析是当代航天工程中出现的新课题。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。