With high stability, sensitivity and spatial accessibility, the seam tracking system based on the rotating arc sensor is one of the most effective methods currently.
其稳定性好，灵敏度高，空间可达性好，因而它是目前最有效的水下焊缝跟踪方法之一。
A new bus accessibility measurement is suggested, which USES bus operating speed and bus passenger demand to describe temporal and spatial accessibility, respectively.
对公交可达性给出了新的度量方法，该方法分别以公交运营速度和公交客流量衡量空间可达性和时间可达性。
A new bus accessibility measurement is suggested, which USES bus operating speed and bus passenger demand to describe temporal and spatial accessibility, respectively.
对公交可达性给出了新的度量方法，该方法分别以公交运营速度和公交客流量衡量空间可达性和时间可达性。
应用推荐