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。
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.
本文介绍了M 27和M24两种直径高强度螺栓不同板束组成时扭矩系数的全部试验结果，可供实际使用时参考。
In this paper all experimental results of the torsion moment coefficients of high strength bolts with two kinds diameters, M27 and M24, and different plate combinations are presented.
在直径为6毫米的电子枪窗口后测得电子束峰值电流为7安，脉冲的半峰宽为6～8毫微秒，最大电子能量约为107千电子伏特。
Thee-beam peak current is 7A measured behind a 6mm diameter e-beam window. The pulse duration (FWHM) is 6-8ns and the maximum electron energy is about 107keV.
介绍了变像管扫描相机对直线感应加速器注入器中的电子束束剖面直径的应用。
Image converter tube camera applied firstly to study changing process of profile diameter of electron beam produced by injector of accelerator is presented.
本文论述激光微束照射细胞的损伤点直径和聚焦光斑上能量密度的测试方法。
The measuring methods for the diameter of cell damage spot caused by laser microbeam and the energy density of focusing spot are described in this paper.
应用显微外科技术，后根一般可分为10 ~18小束，前根一般分为6 ~11小束，其小束的直径是基本一样，数值较为恒定。
Microsurgical observation proved that dorsal root could be divided into 10-18 small tracts and anterior root 6-11 tracts; the diameter of small tracts was similar and the number was constant.
用这个激光聚焦系统，激光微束仪能获得直径小于0。
Using this focusing system, the laser microbeam instrument has got the focal spot size of less than 0.
分析了焊丝直径对液流束稳定性的影响，指出焊丝直径越细旋转射流过渡的稳定性越强，为实现稳定的旋转射流过渡提供了理论依据。
The effect of the wire diameter on rotating transfer was studied. The results show that the smaller the diameter, the more the stability of LMJ.
直径0.5吋的直探头放在钢板上，钢板后紧贴有丙烯树脂塑料。声束在两种材料中的扩散角约为（ ）。
A 10MHz, 0.5in. dia. , search unit is placed on steel and acrylic plastic in succession. The beam spread in these two materials is approximately.
直径0.5吋的直探头放在钢板上，钢板后紧贴有丙烯树脂塑料。声束在两种材料中的扩散角约为（ ）。
A 10MHz, 0.5in. dia. , search unit is placed on steel and acrylic plastic in succession. The beam spread in these two materials is approximately.
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