flame arc造句
造句与例句手机版
- The arcs were enclosed in a small tube to slow the carbon consumption ( increasing the life span to around 100 hours ) . " Flame arc lamps " were introduced where the carbon rods had metal salts ( usually magnesium, strontium, barium, or calcium fluorides ) added to increase light output and produce different colours.
- It's difficult to see flame arc in a sentence. 用flame arc造句挺难的