词汇	灰色模型
释义	灰色模型 gray model
随便看	self contained data base self-contained data base self-contained database language self-contained data-base management self-contained data language self-contained dbms self-contained destination selection selfcontained digraph self-contained digraph self-contained discharge Self-contained draw-well self-contained drill selfcontained drive self contained drive self-contained drive self-contained drive pump self-contained economy self contained ecosystem self-contained ecosystem self-contained electric system self-contained engine self-contained engine drive self-contained entity self-contained environment self-contained equipment