They create a series of pores ranging from 5 to 25 nm in diameter by placing flakes of graphene over a silicon nitride membrane and drilling nanosized holes in the graphene using an electron beam.
通过将石墨烯薄片放置在一个氮化硅薄膜上，并用电子束在石墨烯上打出纳米尺度的孔，他们制作出了一系列从5到25nm直径的孔。
These holes are gaps in the polymer’s electronic structure where an electron ought to be, but isn’t.
高分子材料电子结构的孔隙内通常应该包含一个电子，但是OLED的高分子材料的电子结构孔隙内却没有电子，因而形成了空穴。
These holes are gaps in the polymer's electronic structure where an electron ought to be, but isn't.
高分子材料电子结构的孔隙内通常应该包含一个电子，但是OLED的高分子材料的电子结构孔隙内却没有电子，因而形成了空穴。
The process leaves behind positively charged electron vacancies called "holes" that can also move through the material.
这以上过程当中，产生了带有正电荷的“空穴”，它们也是可以穿过材料的。
Yan Hejing such analysis by scanning electron microscopy cross-section of bamboo fiber filled with holes, indicating that it has excellent moisture permeability.
阎贺静等通过扫描电镜分析发现竹浆纤维横截面布满了孔洞。说明它具有优良的吸湿透气性。
This paper studied the problems in machining tiny curved holes with electron beam. The concerned formulae were derived so as to provide the basis for machining of tiny cured holes.
本文对电子束加工微细弯孔的有关问题进行了研究，导出了相关的物理方程，为微细弯孔的加工提供了理论依据。
This paper studied the problems in machining tiny curved holes with electron beam. The concerned formulae were derived so as to provide the basis for machining of tiny cured holes.
本文对电子束加工微细弯孔的有关问题进行了研究，导出了相关的物理方程，为微细弯孔的加工提供了理论依据。
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