... stamped concrete 捣固混凝土,模压混凝... stamped nail 压制钉 stamped nut 模压螺母 ...
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The nail type signet has buffering function by making use of the inner spring of a signet handle and the shim of a signet neck to adapt the stamped objects of different states.
利用戳柄内弹簧和戳颈垫片，使之在操作时具有缓冲功能，以适应不同状态的被盖物。
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