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Toggle appear about at the earliest stage between Western zhou dynasty and Eastern zhou dynasty according to the current archaeological data,a large quantity of toggle has been discovered by archaeological excavation.

依据目前的考古资料,带扣最早大约出现于两周之际,是考古发掘出土数量较多的一类器物。

This paper introduces the design of pressing formational mould that produces belt fastener of band conveyor in miner.

介绍矿用带式输送机输送带扣冲压成形模具的设计。

This paper introduces the design of press shaping mould for belt fastener of mine belt conveyor.

　介绍矿用带式输送机皮带扣冲压成型模具的设计。