If the glass were kept hot enough, it would flow over the molten tin until the top surface was also flat, horizontal and perfectly parallel to the bottom surface.

如果玻璃保持足够的温度，它就会在熔化的锡中流动，直到顶部表面也变得平整、水平，与底部表面完全平行。

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Production speed too slow, the bottom again, such as nickel oxide layer in gold slot oxidation (or gold reduction), peel tin.

产速太慢，底层再次氧化，如镍层在金槽氧化(或金还原)，剥锡。

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In 1875, the Constitution found a home in a tin box in the bottom of a closet in a new building that housed the Departments of State, War, and Navy.

NEWYORKER: The Commandments