测定磨具硬度的方法，较常用的有手锥法、机械锥法、洛氏硬度计测定法和喷砂硬度计测定法。

Abrasive hardness measurement method, more commonly used are hand-cone method, mechanical cone method, Rockwell hardness tester hardness measurement method and blasting assay.

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内门扇采用锥角宽滑轮和独特的锁定构置，以及离合式传动执手配置，操作科学合理。

Doors used in a wide cone Angle and a unique locking pulley set structure, and the clutch drive handle configuration, operation of scientific and reasonable.

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内门扇采用锥角宽滑轮和独特的锁定构置，以及离合式传动执手配置，操作科学合理。

Doors used in a wide cone Angle and a unique locking pulley set structure, and the clutch drive handle configuration, operation of scientific and reasonable.

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