单词	root-extraction
释义	root-extraction 开方
随便看	line residual current line residual equalizer line resistance line resistance compensation line resolution line resolution of a picture line response function line response mode line responsibility line restoration line retirement line retrace line retrace ratio line retrieval line retrofit line retry parameter line return period line-return period line reversal Line Reversal Detection Going On-Hook line reversal method Line-reversal method line reverse key liner expansion coefficient liner fabric