手册182页 
# y0 q( Y: {* tWhenever a plane would have been produced, 1 development point is gained by the new aircraft type. For every 100 development points the availability of the aircraft will be moved up one month.7 f5 U, V. }% ^! F 
这段话该怎么理解?特别是关于研发点。  z; Z4 [) {" [% J 
假设已经有100架产量的预研线了,虽然没有飞机产出,但是每月也会消耗生产100架飞机的发动机用来研发,这样每月可以产生100点研究点? |