Methods By the matrix optical method, formulae of waist width and imaging distance of focused Gaussian beams through the coupling system are derived.
方法利用矩阵光学方法，推导了高斯光束经耦合系统聚焦后束腰宽度和像距的计算公式。
Using a complex analytical signal representation, the free-space propagation properties of ultrashort pulsed Bessel-Gauss beams whose waist width is independent of frequency are studied.
使用复解析信号法研究了束宽与频率无关的超短脉冲贝塞尔·高斯光束在自由空间的传输特性。
Enhancement waist muscle: Sitting on stool, two legs are the same width with shoulders.
增强腰肌：坐在凳上，两腿与肩同宽。
Women's bodice had a comfort - able width when fashion was led from the Netherlands. With the arrival of French fashion, the waist was once more tightly laced.
女装上衣在荷兰风格时期曾宽松舒适，但到法国风格到来之时再次勒紧。
Women's bodice had a comfort - able width when fashion was led from the Netherlands. With the arrival of French fashion, the waist was once more tightly laced.
女装上衣在荷兰风格时期曾宽松舒适，但到法国风格到来之时再次勒紧。
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