系船栓

对于系柱类型的夹具而言，这200毫米在下文被称作表观试验长度，它包括与每个系柱相连的鞋带的长度。

illuminated bollard (guardpost)

road bollard washing apparatus

main engine bollard test【水运】

bollard lantern

road bollard

illuminated bollard (guard post)

bollard【水运】

bollard【水运】;dolphin【水运】;