词汇	preparatory roller
释义	preparatory roller n.上油辊
随便看	self-innovation of enterprises self-innovation power of technology self-innovative ability self-innovative capability self-innovative capacity self-innovative government self-innovative learning self-innovatlon self inoculation self-inoculation self-inquiry self-inscription self-insertion self-insight self-inspect self-inspecting self inspection Self-Instruction Programs,Computerized self-instructions self-inspection self inspection record self-inspection record self-inspections self inspection with eyes closed self-inspection with eyes closed