fly cutter  飞刀; 翼形刀

pilot fly cutter  有导翼型刀

fly-wheel hole cutter  打眼凿

fruit fly [=pomace fly]  沮丧; 挫折

Syrphid-fly or hover-fly  食蚜蝇

cutter and cutter compensation  刀具及刀具补偿

cutter head and cutter  刀盘刀具

milling cutter with vertical cutter  立装刀片铣刀

Ⅱ fly ash  Ⅱ级粉煤灰

a fly in amber  珍贵遗物

a fly in the ointment  美中不足之处; 美中不足

a fly on the wheel  自大的人

abnormally high content of carbon in fly ash  飞灰含碳量异常

Activated Fly Ash  活化粉煤灰

Active fly ash  活性粉煤灰

actived fly ash  环流化床; 改性粉煤灰

Activity of Fly Ash  粉煤灰活性

adding volume of fly ash  粉煤灰掺量

Adding-Calcium Fly Ash  增钙粉煤灰

admixture-fly  延迟荧光(DF)