以往关于船舶交通通过能力的研究是针对单向或者双向航道的，很少涉及到T型或者类似航路的船舶交通通过能力的研究。
Former studies aimed at probing into vessel traffic pass through capacity of one-way or two-way channel , little attention paid to T-type or similar channels ' vessel traffic pass through capacity .
双向航道