backset bedding[ˈbækset ˈbedɪŋ] 后积层理;

backslapping[ˈbækslæpɪŋ] n.热情赞扬，热情支持;

backsliding[ˈbækslaɪdɪŋ] v.滑坡( backslide的现在分词 );倒退;退步;故态复萌;

backspacing[bæks'peɪsɪŋ] v.退格( backspace的现在分词 );

backstabbing 暗箭伤人,背后中伤〔以获得好处〕;

backstopping['bækstɔpiŋ] [医]支援;

backswing[ˈbækswɪŋ] n.棍棒挥出前的准备姿态，回复（立场等）;回摆;反冲;

backtracking['bæktrækɪŋ] v.走原路( backtrack的现在分词 );由原路返回;改变主意;取消诺言;

backup ring[ˈbækˌʌp riŋ] [化] 垫圈;支圈;

backward chaining[ˈbækwəd ˈtʃeiniŋ] 温故知新，反向链接;

backward masking[ˈbækwəd ˈmɑ:skiŋ] 反向掩蔽;

backward-looking[ˈbækwəd ˈlukiŋ] adj.回顾过去的;保守的;退缩的;向后看的;

backwashing['bækwɒʃɪŋ] 回洗;反流;反溅;逆流冲洗;

bacterial leaching[bækˈtɪəriəl ˈliːtʃɪŋ] 细菌浸矿;

bacteriophage typing[bækˈtiriəfeidʒ ˈtaɪpɪŋ] 噬菌体分型;

bad feeling[bæd ˈfi:liŋ] 恶感，反感，不满;

bad thing[bæd θiŋ] 坏事;

bad-looking[bæd ˈlukiŋ] 不扬;

bad-mouthing['bædm'aʊðɪŋ] v.苛刻批评( bad-mouth的现在分词 );

badgering['bædʒə(r)] 纠缠不休

badging['bædʒɪŋ] 贴印商标，饰章;

badly detonating[ˈbædli ˈdetəneɪtɪŋ] [化] 强力爆击，强力发爆;

baffling['bæflɪŋ] adj.令人困惑的，难对付的，难解的;

bagging['bægɪŋ] n.装袋，制袋材料;

bagpiping[ˈbæɡpaipɪŋ] v.风笛( bagpipe的现在分词 );

bailing['beɪlɪŋ] n.（凿井时用吊桶）排水;

bait casting[beit ˈkæstɪŋ] （钓完）投饵;

baiting['beɪtɪŋ] 下料;

baking[ˈbeɪkɪŋ] n.烘焙，烘烤;一次烘焙的量;

balancing['bælənsɪŋ] n.配平;