通过这一方法，玻璃的每一面都是熔融表面，只接触空气而避免了与任何器皿的接触。
This way, each side of the sheet is a "melt surface," exposed only to the air and not touched by any part of the equipment.
玻璃锡面水接触角在酸腐蚀过程中一直大于空气面，这是由于锡面含有的锡离子极化率大，有降低表面能的作用导致的。
The contact angle on the tin side is always larger than that on the air side which is caused by the tin ions on the tin side.
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