approach
channel
intake with approach channel引渠式取水
lock approach channel船閘引渠
range approach channel導(dǎo)航進(jìn)場波道
approach channel axis進(jìn)港航道軸線
large approach channel深水進(jìn)港航道
lower approach channel下引航道
upper approach channel上游引航道
approach channel waters航道水域
upstream approach channel上游引航道