yf

The US turned the YF-12 into a reconnaissance plane.

美国最终把YF-12改成了侦察机。

To study teratogenic effects of YF 1 germicide in mice.

探讨YF 1杀菌剂对小鼠的致畸作用。

Yf you turn and walk away, your forever friend follows;

当你转身走开时，真正的朋友将跟随你而去；

The effort involved the design, construction and flight testing of two YF-22 prototype aircraft.

努力参与设计，建造和飞行试验两y f - 22原型机。

Based on the experimental investigation of the flotation collector, the YF-01 collector has been developed.

经过大量的浮选捕收剂的试验研究工作，研制出的新型萤石浮选YF - 01捕收剂。