The diameter of the piston (25) reduces towards the end surface (31).

活塞(25)的直径向着端面(31)减小。

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Plane blade cutting, manual cutting feed, and with smooth end surface.

平刀裁切，手动进刀，端面平整。

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The measuring tool can also be used in vertical measurement about bore and its end surface.

该量具也同样适用于精密内孔与端面的垂直度测量。

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Set the flat end on a perfectly flat surface, and a bubble of air points straight up.

FORBES

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He plays Sam, an astronaut who is nearing the end of a three-year stint on the lunar surface, where he manages the mining of Helium-3, a precious substance that will save the planet Earth.

NEWYORKER: Moon