槽深不能太浅，槽口宽应该适当取大些，中心互作用空间不宜太窄。
The width of the groove should be widened relatively, and the space of the interaction area should not be too narrow.
接着，对螺旋腔高频结构的场分布进行了深入的分析，得出了互作用空间的高频场表达式。
Then, we analyze the field-distribution in the High-frequency structure with helix cavity and gain the distribution function in the interaction space.
电磁波与电子注的互作用不仅与电子注的特性有关，也与波场的极化、空间特性紧密相关。
The effect of the spatial inhomogeneity of TEM mode on the electron beam-TEM wave field interaction has been discussed with the dynamic thcory.
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