主渠道

main channel main route principal channel  detail>>

主渠

main canal main irrigation canal  detail>>

干主渠

main canal  detail>>

渠道

1.(引水灌溉的水道) irrigation ditch; canal; channel  短语和例子   开掘渠道把水引进沙漠。 canals have be...  detail>>

灌溉主渠

main irrigation canal  detail>>

两水排放主渠

stormwater main drain  detail>>

雨水排放主渠

stormwater main drain  detail>>