Figure 6-9 shows the oven with the small aperture for viewing the radiation leaving the enclosure . 图6-9表示一个空腔,上面开着一个小孔,用来观察空腔发出的辐射。
By correctly sizing the cavity and aperture, the device can be made series resonant at any desired frequency . 通过适当选择空腔和入口孔的尺寸,可保证在要求的频率下获得共振状态。
It is necessary to correct the inside dimensions of the cavity for the small penetration of the electromagnetic field into the surface of the metal . 由于电磁场会稍稍透入空腔的金属表面,必须对腔的内部尺寸做出修正。
Study of electroless plating for copper hohlraum fabrication 空腔铜靶的化学镀制研究
Abstract : a cavity is made on both sides of weld bead 文摘:在焊道表面两侧作一空腔。