您要查找的是不是：
- backgammon n. 西洋双陆棋戏
- back-mixing 回混
- backbiting n. 诽谤；中伤
- backspacing 退回
backmixing n. 返混；逆向混合，回混
网络短语:
backmixing g 反向混合
vapor backmixing 气相返混
backmixing theory 返混理论
non backmixing 无返混
backmixing performance 返混特性
axial backmixing 轴向混合
stochastic backmixing 随机返混
gas backmixing 气体返混
liquid backmixing 液相返混