词汇	練文
释义	練文 liàn wén比喻像白练飘动般的波纹。练文
随便看	single line spectroscopic binary single-line spectroscopic binary single-line spectro-scopic binary single line spectrum single-line spectrum single line store single-line store single line stream single line subscriber single line subscriber line single-line subscriber line single-line subsurface safety valve single-line switch single line switching system single-line switching system singleline takeoff single line tariff single-line tariff single line telephone single line to ground fault single line-to-ground fault single-line to ground fault single-line-to-ground fault single-line traffic single-line transfer system