back to back methodback-to-back methodloading back method反: reverse side括: draw together; contract incl ...差动反括: differential feedback method负载反括: loading back反括效果返送: fb=feed back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:反括，即可在微信中查询翻译
