lff meaning in Chinese

低频滤波器

General specification for lff ground responders
敌我识别地面应答机通用规范
Never put off the work till tomorrow what you can put lff today
不要等明天交上差再找借口，今天就要找好。
The nanchuan tianbao special casting co . , ltd . is a private company engaged in lost foam foundry ( short for lff ) technique
南川天宝特种铸造有限公司是专业从事消失模铸造的民营企业。
We are the only domestic enterprise who adopts the lff technique to cast the automobile engine cylinder and has this lff technology industrialized till now
2采用消失模工艺铸造汽车发动机缸体，且工业化应用并配套主机厂，目前国内还仅此一家。