词汇	piston ring lock
释义	piston ring lock 活塞环端接合
随便看	second order segregation second-order segregation second order self-adaptive secondorder sensitivity second-order sensitivity second-order sequence second order servo second-order servo second order shul instability second-order similar system second-order singular equation second order singularity second order sliding mode second-order sliding mode second order sliding mode control second-order slip flow second order soliton second-order soliton secondorder spatial coherence second-order spectra second order spectrum second-order spectrum second-order spin patterns second-order state variable filter second-order station