二级: two stage; two level; second ...渠道: irrigation ditch; canal; cha ...零级渠道: zero-lever channel三级渠道: three-lever channel一级渠道: one-lever channel级渠: stechannel梯级渠；级渠: stepped channel渠道: 1.(引水灌溉的水道) irrigation ditch; canal; channel 开掘渠道把水引进沙漠。 canals have been built to take water to the desert.2.(途径) medium of communication; channel 通过各种渠道 through various channels; 通过外交渠道 through diplomatic channels; 通过文化交流的渠道 through the medium of cultural exchange二级: two stage; two level; second level; secondary; second 这船列入二级。the ship rates as second沟,渠道: ditch湖渠道: lagoon moat koltuk kol ostingi频道,渠道: channel渠道工: canal work渠道化: canalization; channelization渠道口: canal mouth; canalmouth渠道怜: channel flow; flow渠道商: channel vendor渠道水: canal water渠道站: canal station水渠道: outlet conduit挖渠道: trenching微渠道: microchannel主渠道: main channel; main route; principal channel次级,二级: sec secondary第二级: second stage◇第二级电压范围(30伏至175伏) second voltage range; 第二级校正 second-order correction
