The plate-shaped main body is formed with a through hole connecting the bottom face and the second face.
所述板形主体形成有连接所述底表面与所述第二表面的通孔。
The contacting area of the electron-emitting layer and the cathode electrode is limited to the periphery except a center part on the bottom face of the hole.
因此,由于电子发射层接收来自位于其侧 面的阴极电极的电子,所以电子主要从电子发射层表面的边缘部发射, 借此提高电子聚焦性能。
The slip effect of bolting bottom face and side face plate of RC beam is derived under elastic condition and its influence on strength and rigidity of RC beam is obtained.
在弹性条件下,对锚栓钢板梁底面布置及梁侧面布置两种加固方式进行了滑移效应的理论推导,得出了滑移效应对梁强度及刚度的影响算式。
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