以下为句子列表：
英文: Abstract: According to the fragment warhead of the missile,we propose dynamic characteristic of fragment dispersion in different reference frames,calculate dynamic distributing density function in earth reference frame and missile reference frame,and poin
中文: 文摘:以某型防空导弹的破片杀伤式战斗部为例，分析了在不同坐标系中的破片动态飞散特性，分别计算出在地面坐标系和弹体坐标系中破片的动态飞散密度函数，指出在不同的坐标系中战斗部的飞散区和飞散密度不同。
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英文: Based on four different reference frames, namely absolute angle synchronized reference frame, relative angle synchronized reference frame, reference frame in which some machine is taken as reference machine, and inertia center reference frame, methods of
中文: 摘要介绍了多机电力系统在4种参考坐标系：绝对功角同步旋转坐标系、相对功角同步旋转坐标系、某一机组参考系和惯性中心参考系下的线性空间数学模型的形成方法。
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英文: By transforming the reference frame of the velocity field of horizontal movement observed by GPS during 1999-2001 and 2001-2004 in the northeastern margin of Qinghai-Tibet block and then deducting the holistic movement of the region from it, the result ou
中文: 摘要将1999~2001年、2001~2004年两个时段中青藏块体东北缘GPS水平速度场进行参考框架的变换，扣除区域刚性整体平移和旋转，得到反映区域内部相对运动的水平速度场。
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英文: In this paper, the location and machining of huge workpiece is discussed, some characteristic point coordinates can be obtained by using NC machine tool and measuring equipment, then position of huge wokpiece under machine reference frame can be acquired
中文: 摘要针对超大型工件的加工定位问题进行了探讨，提出了利用数控机床本身结合一定的辅助测量设备对加工工件进行测量的方法，然后利用测量点与理论模型体的对应点进行数据计算，从而快速确定工件位置。
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英文: Taking the results as boundary constraint and the velocity field of horizontal movement after transforming reference frame as the load of FEM node, the velocity field of horizontal movement in the region is simulated, the principal strain rate field and m
中文: 将反演结果作为边界约束并将变换参考框架后的水平速度场作为有限元节点载荷，模拟区域内部水平运动场并计算其主应变率场、最大剪应变率场，以分析这两个时段中这两种场的变化特征及其与地震孕育之间的关系。
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