背孔
- 网络back hole;dorsal pore;dorsal foramen;back eye
![背孔](../cache/1340366.jpg)
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底镜沉积于EPW腐蚀液腐蚀形成的背孔内,在1.2~1.5μm范围内,反射率高达99%。
Reflectivity spectrum indicates that the mirror deposited in the hole has a reflectivity as high as 99 % in the range of 1.2 ~ 1.5 μ m.
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一种新的机械自紧理论及光塑性数字散斑相关方法背孔属(Notocotylus)一新种的描述[吸虫纲:背孔科(Notocotylidae)]
A New Approach of Mechanical Autofrettage Theory and Photoplasticity Digital Speckle Correlation A NEW SPECIES OF NOTOCOTYLUS FROM CANTON ( TREMATODA : NOTOCOTYLIDAE )
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身体前几个节间沟内经常无背孔。
There are usually no dorsal pores in the first few intersegmental grooves .
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扫描电镜观察表明,孵化第32&36天的胚胎背部第二行鳞的各列鳞片表面均有背腺腺孔,以后逐渐出现少数不规则的退化,孵化第58天以后,绝大多数背腺腺孔消失。
Observation under scanning electron microscope revealed that there were dorsal gland holes on surface of every dorsal scale in the second row of earlier embryos , and afterwards , a few of gland holes degenerated gradually in an irregular way .
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该天线满足电讯设计需求,且避免采用接地板背腔开工艺孔的方法。
The antenna can meet the microwave design and avoid the drilling holes in ground plate .