就小型立式锅炉长圆孔开孔强度计算进行了探讨，根据长圆孔的应力状态，提出了自己的看法。
The paper discussed the strength calculation of the growing circle bure of small scale vertical boiler, and put forward his opinion according its stress.
探讨出一种在普通车床上加工锥度长圆孔的新途径，既保证了产品质量又提高了生产效率，取得了良好的效果。
A new way for maching of long taper hole on universal lathe is discussed, which could ensure machining quality, heighten productivity and gain good result.
而TE模式下(太赫兹波偏振方向平行于狭缝)，太赫兹波段金属亚波长狭缝的透射规律与单个金属亚波长圆孔相同。
In the case of the te mode (the polarization direction along to the slit), the transmission characteristics are the same as that of the single sub-wavelength metallic circular hole.
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