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Support on chocks , as of boats , for example .

用楔子支撑，比如在船上。

Railway transport equipment . General tackle . Chocks for barrels and vehicles .

铁路运输设备。一般用具。桶和车辆用楔形垫块。

Bedplate prepared for thrust sleeve type foundation bolt and resin chocks .

推力套式底座螺栓和树脂块台板。