【经】 critical path method
key; crux; Gordian knot; hinge; linchpin; sticking point
【经】 key; key point
line; route; course; itinerary; path; way
【经】 channel; route
means; measure; medium; method; plan; technique; way; ways and means
【计】 P; PROC
【医】 modus
【经】 means; modus; tool