back edge后: behind; back; rear沿: water's edge; bank脉冲: impulse; pulse; impulsion; o ...的: 4次方是 The fourth power of 2 i ...脉冲的: pulsate; pulsing下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:后沿脉冲的，即可在微信中查询翻译
