Instead of being three dimensional, space actually has more dimensions that are curled into little loops too small to be detected except in a high-energy particle collision.
空间不是三维的，事实上拥有弯曲成环的多个维度，这些环小到只有在高能粒子碰撞时才能检测得到。
In allusion to these problems, a plasma sheath model in an oblique magnetic field, which has one dimension coordinate space and three dimensions speed space, has been build.
针对以上问题，我们建立一个一维坐标空间三维速度空间的斜磁场作用下的等离子体鞘层物理模型。
The results of three dimensions space FEM model calculation has been proved to be more accurate, but it consumes too much time and money.
而用三维空间有限元方法计算总振动固有频率是比较准确的，但是耗费时间和精力都比较多。
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