falling-off下降;脱开
falling-off biofilm脱落的生物膜
falling -off效率减低
falling-off accident脱落事故
falling-off phenomenon[物化] 降变现象;翻译
falling-off e下降
falling-off U下降
falling-off in speed转速下降
同义词:slumpslackdrop-offfalloff