常見例句Also because of closely spaced polepiece and the associated capability of focusing low-voltage beams, folded waveguide circuit is well suited for light weight applications. 由于緊湊的整體極靴，能對(duì)低電壓電子注聚焦，因而很適合要求輕重量的場(chǎng)合。 返回 polepiece