一维（1D）
所有因变量参数都可以用单一自变量参数来描述的系统。对于谐振器而言，这意味着其形状和性能参数都只取决于一个坐标值。例如，如果谐振器沿 Z 轴取向，那么只需指定 Z 位置，就可以预测谐振器在该 Z 位置处的所有情况。（注意：如果任何基本假设不成立，预测的性能不一定准确——例如，假设谐振器是细长的而实际并非如此。）
另见轴对称。
One dimensional (1D)
A system where all dependent parameters can be described in terms of a single independent parameter. For a resonator this means that both the shape and performance parameters depend only on a single coordinate value. For example, if a resonator is oriented along the Z axis, then everything about the resonator at any Z location can be predicted just by specifying the Z location. (Note: the predicted performance will not necessarily be accurate if any underlying assumptions are violated -- for example, an assumption that the resonator is slender if it is not.)
Also see axisymmetric.