setbackn. 挫折、退步、逆流學術名詞[螺葉]後傾:造船工程將指針撥回:電機工程逆轉:電機工程延遲:電機工程阻礙:電機工程電刷後棱邊:電機工程電刷後邊:電機工程倒退作用:資訊英文釋義an unfortunate happening that hinders or impedes; something that is thwarting or frustrating