救生艇底扶手
keel rail (or bilge rail)
键合螺桨 keyed propeller
无键螺桨 keyless propeller
动力空气泵 kinetic air pump
动力泵 kinetic pump
键合螺桨 keyed propeller
无键螺桨 keyless propeller
动力空气泵 kinetic air pump
动力泵 kinetic pump
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