The troy ounce is part of the troy weight system which is used to weigh precious metals.

金衡盎司是金衡制的一部分， 用于称量贵金属。

Specifically, let's say that we want to get one troy ounce of silver.

具体来说，假设我们想要获得一金衡盎司的白银。

17, 18. TROY: Wondering when you're gonna see the front runner.

MATT：17、18。 TROY：想知道你什么时候能看到领跑者。

But let's be at least a little bit modern about this, a troy ounce equals 31.1 grams.

但是，让我们至少在这方面有点现代， 金衡盎司等于 31. 1 克。

Meanwhile, Troy is hauling out of the vet check, stepping on the gas until he gets to ... TROY: The backside of Mingus Mountain.

马特：与此同时，特洛伊正从兽医检查中拖出来，踩油门直到他到达… … 特洛伊：明格斯山的背面。

Multiply 58.45 grams per mole by 0.288 and we find: we need 16.8 grams of sodium chloride to precipitate out 1 troy ounce of silver out of silver nitrate solution.

将每摩尔 58. 45 克乘以 0.288，我们发现：我们需要 16. 8 克氯化钠才能从硝酸银溶液中沉淀出 1 金衡盎司的银。