Self-raising flour contains a raisingagent, but if you only have plain flour on hand, add 2 tsp of baking powder to 1 cup of plain flour.
自发粉里面已经含有发酵介质,如果你手头只有普通面粉,那么一杯普通面粉应加2茶匙泡达粉。
3
A speed-raising tool holder which is drived by special traction agent is developed. Speed of tools can be raised8thimes without any change of the construction and spindle speed of machine.