花粉外孔 exopore
之外孔 open pores
虫包外孔 cystial pore
虫体外孔 polipidial pore
外缩凹孔 depression ; depre ion
外耳孔 porus acusticus externus
闭孔外肌 [解剖] obturator externus ; [解剖] musculus obturator externus
外珠孔 [植] exostome
第四脑室外侧孔 fourth ventricle ; lateral apertures of fourth ventricle ; [解剖] apertura lateralis ventriculi quarti
当外孔大于1.5倍束腰时，衍射后轴上光强调制被有效压抑，这为选择光阑提供了合理参数。
While the modulation characteristics disappear as the outer circular aperture is bigger than 1.5 times of the beam waist size, the results offer reasonable aperture parameter for diffraction.
结论：将硅胶管从兔的椎间外孔缓慢塞入椎间管内使腰神经根慢性轻度受压，更接近于腰椎间盘突出和椎间管狭窄对神经根的压迫。
Conclusion: The chronic nerve root compressed model made in this article was more similar to what resulted from lumbar disc herniation and lumber nerve canal narrowing.
一些帆船制造商通过在驾驶舱和船体上设计一个安装舷外板的孔来解决内外板之间的争论。
Some sailboat builders have resolved the debate between inboards and outboards by designing the cockpit and hull with a hole in which outboard is mounted.
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