词汇	gumming of piston rings
释义	gumming of piston rings 活塞圈烧焦
随便看	foundation of equipment foundation of existence foundation of geometry Foundation of Geophysics foundation of gravelly soil foundation of ground base foundation of highway bridge foundation of history foundation of house foundation of human nature foundation of iron tower Foundation of Labour Foundation of Law foundation of legal principle foundation of legal right foundation of legitimacy foundation of life-long physical education foundation of machine design foundation of main pylon foundation of main pylon pier foundation of making characters foundation of management Foundation of Marxist Philosophy foundation of masonry foundation of material science