使用锡纸时,通常没有正反面之分,因为锡纸通常是双面均匀的。但是,如果你使用的是一种特殊类型的锡纸,例如一面有涂层以防止食物粘在上面,另一面则没有涂层,那么你可能需要区分正反面。在这种情况下,你可以根据需要选择涂层的一面来使用。一般来说,如果需要防止食物粘在锡纸上,你会选择使用涂层的一面,而如果你希望锡纸保持原样,你可以选择使用没有涂层的一面。
When use tinfoil, do not have the cent of face of positive and negative normally, because tinfoil is double-faced and even normally. But, if you use the silver paper that is a kind of special kind, for example at the same time coating is stuck in order to avoid food above, other one side does not have coating, so you may need range of divisional positive and negative. Below this kind of circumstance, you can choose the one side of coating to use according to need. Generally speaking, if need to prevent food to be stuck on tinfoil, you can choose to use the one side of coating, and if you hope tinfoil keeps unvarnished, you can choose to use the one side that does not have coating.